117207657 has 36 divisors (see below), whose sum is σ = 200215236. Its totient is φ = 65862720.

The previous prime is 117207653. The next prime is 117207679. The reversal of 117207657 is 756702711.

It can be written as a sum of positive squares in 2 ways, for example, as 67420521 + 49787136 = 8211^2 + 7056^2 .

It is not a de Polignac number, because 117207657 - 2² = 117207653 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (117207653) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 24723 + ... + 29079.

Almost surely, 2^117207657 is an apocalyptic number.

It is an amenable number.

117207657 is a deficient number, since it is larger than the sum of its proper divisors (83007579).

117207657 is a wasteful number, since it uses less digits than its factorization.

117207657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4438 (or 4428 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 36.

The square root of 117207657 is about 10826.2485192240. The cubic root of 117207657 is about 489.3865111330.

The spelling of 117207657 in words is "one hundred seventeen million, two hundred seven thousand, six hundred fifty-seven".