66870264 has 32 divisors (see below), whose sum is σ = 167386320. Its totient is φ = 22262016.

The previous prime is 66870247. The next prime is 66870277. The reversal of 66870264 is 46207866.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27964 + ... + 30260.

Almost surely, 2^66870264 is an apocalyptic number.

It is an amenable number.

66870264 is an abundant number, since it is smaller than the sum of its proper divisors (100516056).

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

66870264 is a wasteful number, since it uses less digits than its factorization.

66870264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519 (or 3515 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 66870264 is about 8177.4240442819. The cubic root of 66870264 is about 405.8924869209.

The spelling of 66870264 in words is "sixty-six million, eight hundred seventy thousand, two hundred sixty-four".