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106793905 = 521358781
BaseRepresentation
bin1100101110110…
…00101110110001
321102221200200211
412113120232301
5204314401110
614332544121
72434506331
oct627305661
9242850624
10106793905
1155311929
122b922041
1319181c7a
141027d0c1
15959798a
hex65d8bb1

106793905 has 4 divisors (see below), whose sum is σ = 128152692. Its totient is φ = 85435120.

The previous prime is 106793893. The next prime is 106793909. The reversal of 106793905 is 509397601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 509397601 = 4391160359.

It can be written as a sum of positive squares in 2 ways, for example, as 36385024 + 70408881 = 6032^2 + 8391^2 .

It is not a de Polignac number, because 106793905 - 25 = 106793873 is a prime.

It is a super-2 number, since 2×1067939052 = 22809876290298050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) 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 not an unprimeable number, because it can be changed into a prime (106793909) 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, 10679386 + ... + 10679395.

It is an arithmetic number, because the mean of its divisors is an integer number (32038173).

Almost surely, 2106793905 is an apocalyptic number.

It is an amenable number.

106793905 is a deficient number, since it is larger than the sum of its proper divisors (21358787).

106793905 is an equidigital number, since it uses as much as digits as its factorization.

106793905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21358786.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 106793905 is about 10334.1136533328. The cubic root of 106793905 is about 474.4409378249.

The spelling of 106793905 in words is "one hundred six million, seven hundred ninety-three thousand, nine hundred five".

Divisors: 1 5 21358781 106793905