66578912 has 12 divisors (see below), whose sum is σ = 131077296. Its totient is φ = 33289440.

The previous prime is 66578903. The next prime is 66578923. The reversal of 66578912 is 21987566.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040264 + ... + 1040327.

It is an arithmetic number, because the mean of its divisors is an integer number (10923108).

Almost surely, 2^66578912 is an apocalyptic number.

It is an amenable number.

66578912 is a deficient number, since it is larger than the sum of its proper divisors (64498384).

66578912 is a wasteful number, since it uses less digits than its factorization.

66578912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080601 (or 2080593 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 66578912 is about 8159.5901857875. The cubic root of 66578912 is about 405.3021410477.

The spelling of 66578912 in words is "sixty-six million, five hundred seventy-eight thousand, nine hundred twelve".