97697457 has 72 divisors (see below), whose sum is σ = 171184832. Its totient is φ = 53317440.

The previous prime is 97697437. The next prime is 97697459. The reversal of 97697457 is 75479679.

It is a happy number.

It is not a de Polignac number, because 97697457 - 2⁷ = 97697329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97697459) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 948468 + ... + 948570.

Almost surely, 2^97697457 is an apocalyptic number.

It is an amenable number.

97697457 is a deficient number, since it is larger than the sum of its proper divisors (73487375).

97697457 is a wasteful number, since it uses less digits than its factorization.

97697457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 197 counting only the distinct ones).

The product of its digits is 3333960, while the sum is 54.

The square root of 97697457 is about 9884.2023957424. The cubic root of 97697457 is about 460.5686995866.

The spelling of 97697457 in words is "ninety-seven million, six hundred ninety-seven thousand, four hundred fifty-seven".