66328412 has 12 divisors (see below), whose sum is σ = 121121616. Its totient is φ = 31722240.

The previous prime is 66328397. The next prime is 66328433. The reversal of 66328412 is 21482366.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 360389 + ... + 360572.

It is an arithmetic number, because the mean of its divisors is an integer number (10093468).

Almost surely, 2^66328412 is an apocalyptic number.

It is an amenable number.

66328412 is a deficient number, since it is larger than the sum of its proper divisors (54793204).

66328412 is a wasteful number, since it uses less digits than its factorization.

66328412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720988 (or 720986 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 66328412 is about 8144.2256844957. The cubic root of 66328412 is about 404.7931921840.

The spelling of 66328412 in words is "sixty-six million, three hundred twenty-eight thousand, four hundred twelve".