66372976 has 20 divisors (see below), whose sum is σ = 128898000. Its totient is φ = 33108992.

The previous prime is 66372961. The next prime is 66372979. The reversal of 66372976 is 67927366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66372979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2565 + ... + 11803.

It is an arithmetic number, because the mean of its divisors is an integer number (6444900).

Almost surely, 2^66372976 is an apocalyptic number.

It is an amenable number.

66372976 is a deficient number, since it is larger than the sum of its proper divisors (62525024).

66372976 is a wasteful number, since it uses less digits than its factorization.

66372976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9696 (or 9690 counting only the distinct ones).

The product of its digits is 571536, while the sum is 46.

The square root of 66372976 is about 8146.9611512514. The cubic root of 66372976 is about 404.8838278798.

The spelling of 66372976 in words is "sixty-six million, three hundred seventy-two thousand, nine hundred seventy-six".