68604932569 has 2 divisors, whose sum is σ = 68604932570. Its totient is φ = 68604932568.

The previous prime is 68604932567. The next prime is 68604932587. The reversal of 68604932569 is 96523940686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40476611344 + 28128321225 = 201188^2 + 167715^2 .

It is a cyclic number.

It is not a de Polignac number, because 68604932569 - 2¹ = 68604932567 is a prime.

It is a super-2 number, since 2×68604932569² (a number of 22 digits) contains 22 as substring.

Together with 68604932567, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (68604932563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34302466284 + 34302466285.

It is an arithmetic number, because the mean of its divisors is an integer number (34302466285).

Almost surely, 2^68604932569 is an apocalyptic number.

It is an amenable number.

68604932569 is a deficient number, since it is larger than the sum of its proper divisors (1).

68604932569 is an equidigital number, since it uses as much as digits as its factorization.

68604932569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16796160, while the sum is 58.

The spelling of 68604932569 in words is "sixty-eight billion, six hundred four million, nine hundred thirty-two thousand, five hundred sixty-nine".