66274904 has 8 divisors (see below), whose sum is σ = 124265460. Its totient is φ = 33137448.

The previous prime is 66274867. The next prime is 66274909. The reversal of 66274904 is 40947266.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66274909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4142174 + ... + 4142189.

Almost surely, 2^66274904 is an apocalyptic number.

It is an amenable number.

66274904 is a deficient number, since it is larger than the sum of its proper divisors (57990556).

66274904 is a wasteful number, since it uses less digits than its factorization.

66274904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8284369 (or 8284365 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 66274904 is about 8140.9399948655. The cubic root of 66274904 is about 404.6843122412.

The spelling of 66274904 in words is "sixty-six million, two hundred seventy-four thousand, nine hundred four".