66047404 has 12 divisors (see below), whose sum is σ = 115641064. Its totient is φ = 33007104.

The previous prime is 66047369. The next prime is 66047417. The reversal of 66047404 is 40474066.

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, 10732 + ... + 15724.

Almost surely, 2^66047404 is an apocalyptic number.

It is an amenable number.

66047404 is a deficient number, since it is larger than the sum of its proper divisors (49593660).

66047404 is a wasteful number, since it uses less digits than its factorization.

66047404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8304 (or 8302 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 66047404 is about 8126.9553954725. The cubic root of 66047404 is about 404.2207319084.

The spelling of 66047404 in words is "sixty-six million, forty-seven thousand, four hundred four".