66332968 has 16 divisors (see below), whose sum is σ = 133941780. Its totient is φ = 30615168.

The previous prime is 66332953. The next prime is 66332999. The reversal of 66332968 is 86923366.

It can be written as a sum of positive squares in 2 ways, for example, as 66292164 + 40804 = 8142^2 + 202^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318805 + ... + 319012.

Almost surely, 2^66332968 is an apocalyptic number.

It is an amenable number.

66332968 is an abundant number, since it is smaller than the sum of its proper divisors (67608812).

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

66332968 is a wasteful number, since it uses less digits than its factorization.

66332968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637836 (or 637832 counting only the distinct ones).

The product of its digits is 279936, while the sum is 43.

The square root of 66332968 is about 8144.5053870692. The cubic root of 66332968 is about 404.8024601860.

The spelling of 66332968 in words is "sixty-six million, three hundred thirty-two thousand, nine hundred sixty-eight".