117661664 has 12 divisors (see below), whose sum is σ = 231646464. Its totient is φ = 58830816.

The previous prime is 117661657. The next prime is 117661673. The reversal of 117661664 is 466166711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1838432 + ... + 1838495.

It is an arithmetic number, because the mean of its divisors is an integer number (19303872).

Almost surely, 2^117661664 is an apocalyptic number.

It is an amenable number.

117661664 is a deficient number, since it is larger than the sum of its proper divisors (113984800).

117661664 is an equidigital number, since it uses as much as digits as its factorization.

117661664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3676937 (or 3676929 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 117661664 is about 10847.1961354075. The cubic root of 117661664 is about 490.0175809324.

The spelling of 117661664 in words is "one hundred seventeen million, six hundred sixty-one thousand, six hundred sixty-four".