120664720 has 40 divisors (see below), whose sum is σ = 306051840. Its totient is φ = 43877760.

The previous prime is 120664717. The next prime is 120664721. The reversal of 120664720 is 27466021.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (120664721) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 67680 + ... + 69439.

It is an arithmetic number, because the mean of its divisors is an integer number (7651296).

Almost surely, 2^120664720 is an apocalyptic number.

120664720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120664720 is an abundant number, since it is smaller than the sum of its proper divisors (185387120).

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

120664720 is a wasteful number, since it uses less digits than its factorization.

120664720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137143 (or 137137 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 120664720 is about 10984.7494281845. The cubic root of 120664720 is about 494.1514830993.

The spelling of 120664720 in words is "one hundred twenty million, six hundred sixty-four thousand, seven hundred twenty".