688622920325 has 12 divisors (see below), whose sum is σ = 854347403460. Its totient is φ = 550604799360.

The previous prime is 688622920291. The next prime is 688622920351. The reversal of 688622920325 is 523029226886.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 30501225316 + 658121695009 = 174646^2 + 811247^2 .

It is not a de Polignac number, because 688622920325 - 2⁶ = 688622920261 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7290560 + ... + 7384409.

It is an arithmetic number, because the mean of its divisors is an integer number (71195616955).

Almost surely, 2^688622920325 is an apocalyptic number.

It is an amenable number.

688622920325 is a deficient number, since it is larger than the sum of its proper divisors (165724483135).

688622920325 is a wasteful number, since it uses less digits than its factorization.

688622920325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14676856 (or 14676851 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 688622920325 in words is "six hundred eighty-eight billion, six hundred twenty-two million, nine hundred twenty thousand, three hundred twenty-five".