118120665 has 32 divisors (see below), whose sum is σ = 206591616. Its totient is φ = 57277440.

The previous prime is 118120661. The next prime is 118120733. The reversal of 118120665 is 566021811.

It is not a de Polignac number, because 118120665 - 2² = 118120661 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (118120661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8545 + ... + 17585.

It is an arithmetic number, because the mean of its divisors is an integer number (6455988).

Almost surely, 2^118120665 is an apocalyptic number.

118120665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

118120665 is a deficient number, since it is larger than the sum of its proper divisors (88470951).

118120665 is a wasteful number, since it uses less digits than its factorization.

118120665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9129.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 118120665 is about 10868.3331288657. Note that the first 3 decimals coincide. The cubic root of 118120665 is about 490.6539443078.

The spelling of 118120665 in words is "one hundred eighteen million, one hundred twenty thousand, six hundred sixty-five".