117640597 has 2 divisors, whose sum is σ = 117640598. Its totient is φ = 117640596.

The previous prime is 117640573. The next prime is 117640643. The reversal of 117640597 is 795046711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82428241 + 35212356 = 9079^2 + 5934^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117640597 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117640507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58820298 + 58820299.

It is an arithmetic number, because the mean of its divisors is an integer number (58820299).

Almost surely, 2^117640597 is an apocalyptic number.

It is an amenable number.

117640597 is a deficient number, since it is larger than the sum of its proper divisors (1).

117640597 is an equidigital number, since it uses as much as digits as its factorization.

117640597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 117640597 is about 10846.2250114959. The cubic root of 117640597 is about 489.9883337497.

The spelling of 117640597 in words is "one hundred seventeen million, six hundred forty thousand, five hundred ninety-seven".