66916364 has 12 divisors (see below), whose sum is σ = 118753488. Its totient is φ = 32986800.

The previous prime is 66916363. The next prime is 66916379. The reversal of 66916364 is 46361966.

It is not an unprimeable number, because it can be changed into a prime (66916363) 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, 117527 + ... + 118094.

It is an arithmetic number, because the mean of its divisors is an integer number (9896124).

Almost surely, 2^66916364 is an apocalyptic number.

It is an amenable number.

66916364 is a deficient number, since it is larger than the sum of its proper divisors (51837124).

66916364 is a wasteful number, since it uses less digits than its factorization.

66916364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235696 (or 235694 counting only the distinct ones).

The product of its digits is 139968, while the sum is 41.

The square root of 66916364 is about 8180.2422947001. The cubic root of 66916364 is about 405.9857388602.

The spelling of 66916364 in words is "sixty-six million, nine hundred sixteen thousand, three hundred sixty-four".