117642659 has 2 divisors, whose sum is σ = 117642660. Its totient is φ = 117642658.

The previous prime is 117642611. The next prime is 117642673. The reversal of 117642659 is 956246711.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117642659 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (117642359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58821329 + 58821330.

It is an arithmetic number, because the mean of its divisors is an integer number (58821330).

Almost surely, 2^117642659 is an apocalyptic number.

117642659 is a deficient number, since it is larger than the sum of its proper divisors (1).

117642659 is an equidigital number, since it uses as much as digits as its factorization.

117642659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 117642659 is about 10846.3200671933. The cubic root of 117642659 is about 489.9911965654.

The spelling of 117642659 in words is "one hundred seventeen million, six hundred forty-two thousand, six hundred fifty-nine".