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1074008605 = 5214801721
BaseRepresentation
bin100000000000100…
…0001001000011101
32202211221021211111
41000001001020131
54144421233410
6254323422021
735420631265
oct10001011035
92684837744
101074008605
1150128261a
1225b824911
13141680467
14a28d47a5
156444eb8a
hex4004121d

1074008605 has 4 divisors (see below), whose sum is σ = 1288810332. Its totient is φ = 859206880.

The previous prime is 1074008603. The next prime is 1074008627. The reversal of 1074008605 is 5068004701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5068004701 = 6477833083.

It can be written as a sum of positive squares in 2 ways, for example, as 148206276 + 925802329 = 12174^2 + 30427^2 .

It is not a de Polignac number, because 1074008605 - 21 = 1074008603 is a prime.

It is a super-2 number, since 2×10740086052 = 2306988967228092050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1074008603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107400856 + ... + 107400865.

It is an arithmetic number, because the mean of its divisors is an integer number (322202583).

Almost surely, 21074008605 is an apocalyptic number.

It is an amenable number.

1074008605 is a deficient number, since it is larger than the sum of its proper divisors (214801727).

1074008605 is an equidigital number, since it uses as much as digits as its factorization.

1074008605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214801726.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 1074008605 is about 32772.0705021822. The cubic root of 1074008605 is about 1024.0848003732.

The spelling of 1074008605 in words is "one billion, seventy-four million, eight thousand, six hundred five".

Divisors: 1 5 214801721 1074008605