66012984 has 48 divisors (see below), whose sum is σ = 182169000. Its totient is φ = 21587904.

The previous prime is 66012979. The next prime is 66013007. The reversal of 66012984 is 48921066.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4834 + ... + 12465.

Almost surely, 2^66012984 is an apocalyptic number.

It is an amenable number.

66012984 is an abundant number, since it is smaller than the sum of its proper divisors (116156016).

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

66012984 is a wasteful number, since it uses less digits than its factorization.

66012984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17364 (or 17357 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 66012984 is about 8124.8374752976. The cubic root of 66012984 is about 404.1505010622.

The spelling of 66012984 in words is "sixty-six million, twelve thousand, nine hundred eighty-four".