117660618 has 24 divisors (see below), whose sum is σ = 255582756. Its totient is φ = 39120000.

The previous prime is 117660589. The next prime is 117660623. The reversal of 117660618 is 816066711.

It can be written as a sum of positive squares in 2 ways, for example, as 87553449 + 30107169 = 9357^2 + 5487^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 933 + ... + 15368.

Almost surely, 2^117660618 is an apocalyptic number.

117660618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

117660618 is an abundant number, since it is smaller than the sum of its proper divisors (137922138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117660618 is a wasteful number, since it uses less digits than its factorization.

117660618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16710 (or 16707 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 117660618 is about 10847.1479200756. The cubic root of 117660618 is about 490.0161288596.

The spelling of 117660618 in words is "one hundred seventeen million, six hundred sixty thousand, six hundred eighteen".