117660617 has 4 divisors (see below), whose sum is σ = 122776320. Its totient is φ = 112544916.

The previous prime is 117660589. The next prime is 117660623. The reversal of 117660617 is 716066711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117660617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117662617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2557817 + ... + 2557862.

It is an arithmetic number, because the mean of its divisors is an integer number (30694080).

Almost surely, 2^117660617 is an apocalyptic number.

It is an amenable number.

117660617 is a deficient number, since it is larger than the sum of its proper divisors (5115703).

117660617 is an equidigital number, since it uses as much as digits as its factorization.

117660617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5115702.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 117660617 is about 10847.1478739805. The cubic root of 117660617 is about 490.0161274714.

The spelling of 117660617 in words is "one hundred seventeen million, six hundred sixty thousand, six hundred seventeen".