66579372 has 36 divisors (see below), whose sum is σ = 168572040. Its totient is φ = 22156992.

The previous prime is 66579371. The next prime is 66579377. The reversal of 66579372 is 27397566.

66579372 is a `hidden beast` number, since 6 + 6 + 579 + 3 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66579371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29848 + ... + 32000.

Almost surely, 2^66579372 is an apocalyptic number.

It is an amenable number.

66579372 is an abundant number, since it is smaller than the sum of its proper divisors (101992668).

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

66579372 is a wasteful number, since it uses less digits than its factorization.

66579372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3022 (or 3017 counting only the distinct ones).

The product of its digits is 476280, while the sum is 45.

The square root of 66579372 is about 8159.6183734290. The cubic root of 66579372 is about 405.3030744691.

It can be divided in two parts, 6 and 6579372, that added together give a triangular number (6579378 = T₃₆₂₇).

The spelling of 66579372 in words is "sixty-six million, five hundred seventy-nine thousand, three hundred seventy-two".