97117657 has 12 divisors (see below), whose sum is σ = 121664676. Its totient is φ = 76839840.

The previous prime is 97117633. The next prime is 97117663. The reversal of 97117657 is 75671179.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62789776 + 34327881 = 7924^2 + 5859^2 .

It is not a de Polignac number, because 97117657 - 2¹¹ = 97115609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97117627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75594 + ... + 76867.

It is an arithmetic number, because the mean of its divisors is an integer number (10138723).

Almost surely, 2^97117657 is an apocalyptic number.

It is an amenable number.

97117657 is a deficient number, since it is larger than the sum of its proper divisors (24547019).

97117657 is a wasteful number, since it uses less digits than its factorization.

97117657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152488 (or 152481 counting only the distinct ones).

The product of its digits is 92610, while the sum is 43.

The square root of 97117657 is about 9854.8291207915. The cubic root of 97117657 is about 459.6557869167.

The spelling of 97117657 in words is "ninety-seven million, one hundred seventeen thousand, six hundred fifty-seven".