66974684 has 12 divisors (see below), whose sum is σ = 133949424. Its totient is φ = 28703424.

The previous prime is 66974657. The next prime is 66974707. The reversal of 66974684 is 48647966.

66974684 is an admirable number.

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, 1195949 + ... + 1196004.

It is an arithmetic number, because the mean of its divisors is an integer number (11162452).

Almost surely, 2^66974684 is an apocalyptic number.

It is an amenable number.

66974684 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66974684 is a wasteful number, since it uses less digits than its factorization.

66974684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391964 (or 2391962 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 50.

The square root of 66974684 is about 8183.8062049391. The cubic root of 66974684 is about 406.1036483008.

The spelling of 66974684 in words is "sixty-six million, nine hundred seventy-four thousand, six hundred eighty-four".