66577372 has 24 divisors (see below), whose sum is σ = 124210800. Its totient is φ = 31115520.

The previous prime is 66577369. The next prime is 66577397. The reversal of 66577372 is 27377566.

It is a hoax number, since the sum of its digits (43) 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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6847 + ... + 13417.

It is an arithmetic number, because the mean of its divisors is an integer number (5175450).

Almost surely, 2^66577372 is an apocalyptic number.

It is an amenable number.

66577372 is a deficient number, since it is larger than the sum of its proper divisors (57633428).

66577372 is a wasteful number, since it uses less digits than its factorization.

66577372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6741 (or 6739 counting only the distinct ones).

The product of its digits is 370440, while the sum is 43.

The square root of 66577372 is about 8159.4958177574. The cubic root of 66577372 is about 405.2990160837.

The spelling of 66577372 in words is "sixty-six million, five hundred seventy-seven thousand, three hundred seventy-two".