97628691625 has 16 divisors (see below), whose sum is σ = 123023541888. Its totient is φ = 77344662000.

The previous prime is 97628691593. The next prime is 97628691637. The reversal of 97628691625 is 52619682679.

It is not a de Polignac number, because 97628691625 - 2⁵ = 97628691593 is a prime.

It is a super-2 number, since 2×97628691625² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3778531 + ... + 3804280.

It is an arithmetic number, because the mean of its divisors is an integer number (7688971368).

Almost surely, 2^97628691625 is an apocalyptic number.

It is an amenable number.

97628691625 is a deficient number, since it is larger than the sum of its proper divisors (25394850263).

97628691625 is a wasteful number, since it uses less digits than its factorization.

97628691625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7582929 (or 7582919 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 61.

The spelling of 97628691625 in words is "ninety-seven billion, six hundred twenty-eight million, six hundred ninety-one thousand, six hundred twenty-five".