97640625 has 28 divisors (see below), whose sum is σ = 162810416. Its totient is φ = 52050000.

The previous prime is 97640617. The next prime is 97640629. The reversal of 97640625 is 52604679.

It is not a de Polignac number, because 97640625 - 2³ = 97640617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97640629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 45834 + ... + 47916.

Almost surely, 2^97640625 is an apocalyptic number.

It is an amenable number.

97640625 is a deficient number, since it is larger than the sum of its proper divisors (65169791).

97640625 is an frugal number, since it uses more digits than its factorization.

97640625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116 (or 2091 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 97640625 is about 9881.3270869858. The cubic root of 97640625 is about 460.4793758101.

The spelling of 97640625 in words is "ninety-seven million, six hundred forty thousand, six hundred twenty-five".