66044904 has 32 divisors (see below), whose sum is σ = 168954720. Its totient is φ = 21502656.

The previous prime is 66044887. The next prime is 66044921. The reversal of 66044904 is 40944066.

It is an interprime number because it is at equal distance from previous prime (66044887) and next prime (66044921).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30967 + ... + 33030.

It is an arithmetic number, because the mean of its divisors is an integer number (5279835).

Almost surely, 2^66044904 is an apocalyptic number.

It is an amenable number.

66044904 is an abundant number, since it is smaller than the sum of its proper divisors (102909816).

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

66044904 is a wasteful number, since it uses less digits than its factorization.

66044904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64049 (or 64045 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 66044904 is about 8126.8015848795. The cubic root of 66044904 is about 404.2156317101.

The spelling of 66044904 in words is "sixty-six million, forty-four thousand, nine hundred four".