120665718 has 12 divisors (see below), whose sum is σ = 261442428. Its totient is φ = 40221900.

The previous prime is 120665687. The next prime is 120665737. The reversal of 120665718 is 817566021.

120665718 is a `hidden beast` number, since 1 + 20 + 66 + 571 + 8 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3351808 + ... + 3351843.

It is an arithmetic number, because the mean of its divisors is an integer number (21786869).

Almost surely, 2^120665718 is an apocalyptic number.

120665718 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

120665718 is an abundant number, since it is smaller than the sum of its proper divisors (140776710).

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

120665718 is a wasteful number, since it uses less digits than its factorization.

120665718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6703659 (or 6703656 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 120665718 is about 10984.7948547071. The cubic root of 120665718 is about 494.1528454468.

The spelling of 120665718 in words is "one hundred twenty million, six hundred sixty-five thousand, seven hundred eighteen".