116161665 has 16 divisors (see below), whose sum is σ = 185995008. Its totient is φ = 61907456.

The previous prime is 116161657. The next prime is 116161699. The reversal of 116161665 is 566161611.

It is a cyclic number.

It is not a de Polignac number, because 116161665 - 2³ = 116161657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32392 + ... + 35798.

It is an arithmetic number, because the mean of its divisors is an integer number (11624688).

Almost surely, 2^116161665 is an apocalyptic number.

116161665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

116161665 is a deficient number, since it is larger than the sum of its proper divisors (69833343).

116161665 is a wasteful number, since it uses less digits than its factorization.

116161665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5688.

The product of its digits is 6480, while the sum is 33.

The square root of 116161665 is about 10777.8321104014. The cubic root of 116161665 is about 487.9263541668.

It can be divided in two parts, 1161 and 61665, that added together give a palindrome (62826).

The spelling of 116161665 in words is "one hundred sixteen million, one hundred sixty-one thousand, six hundred sixty-five".