120656660 has 12 divisors (see below), whose sum is σ = 253379028. Its totient is φ = 48262656.

The previous prime is 120656647. The next prime is 120656671. The reversal of 120656660 is 66656021.

It can be written as a sum of positive squares in 2 ways, for example, as 33570436 + 87086224 = 5794^2 + 9332^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3016397 + ... + 3016436.

It is an arithmetic number, because the mean of its divisors is an integer number (21114919).

Almost surely, 2^120656660 is an apocalyptic number.

120656660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120656660 is an abundant number, since it is smaller than the sum of its proper divisors (132722368).

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

120656660 is a wasteful number, since it uses less digits than its factorization.

120656660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6032842 (or 6032840 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 120656660 is about 10984.3825497840. The cubic root of 120656660 is about 494.1404802985.

The spelling of 120656660 in words is "one hundred twenty million, six hundred fifty-six thousand, six hundred sixty".