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69480013 = 73951781
BaseRepresentation
bin1000010010000…
…10111001001101
311211201221122211
410021002321031
5120241330023
610521110421
71502366431
oct411027115
9154657584
1069480013
11362463a9
121b328411
1311518c45
1493289c1
156176a0d
hex4242e4d

69480013 has 4 divisors (see below), whose sum is σ = 70431868. Its totient is φ = 68528160.

The previous prime is 69480007. The next prime is 69480029. The reversal of 69480013 is 31008496.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59259204 + 10220809 = 7698^2 + 3197^2 .

It is a cyclic number.

It is not a de Polignac number, because 69480013 - 25 = 69479981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69480713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475818 + ... + 475963.

It is an arithmetic number, because the mean of its divisors is an integer number (17607967).

Almost surely, 269480013 is an apocalyptic number.

It is an amenable number.

69480013 is a deficient number, since it is larger than the sum of its proper divisors (951855).

69480013 is an equidigital number, since it uses as much as digits as its factorization.

69480013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951854.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 69480013 is about 8335.4671734702. The cubic root of 69480013 is about 411.1055094251.

The spelling of 69480013 in words is "sixty-nine million, four hundred eighty thousand, thirteen".

Divisors: 1 73 951781 69480013