66974952 has 48 divisors (see below), whose sum is σ = 184050720. Its totient is φ = 20294560.

The previous prime is 66974909. The next prime is 66974959. The reversal of 66974952 is 25947966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66974959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8628 + ... + 14435.

It is an arithmetic number, because the mean of its divisors is an integer number (3834390).

Almost surely, 2^66974952 is an apocalyptic number.

It is an amenable number.

66974952 is an abundant number, since it is smaller than the sum of its proper divisors (117075768).

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

66974952 is a wasteful number, since it uses less digits than its factorization.

66974952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23094 (or 23079 counting only the distinct ones).

The product of its digits is 816480, while the sum is 48.

The square root of 66974952 is about 8183.8225787220. The cubic root of 66974952 is about 406.1041899763.

The spelling of 66974952 in words is "sixty-six million, nine hundred seventy-four thousand, nine hundred fifty-two".