66002904 has 64 divisors (see below), whose sum is σ = 200016000. Its totient is φ = 20000160.

The previous prime is 66002897. The next prime is 66002921. The reversal of 66002904 is 40920066.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11514 + ... + 16265.

It is an arithmetic number, because the mean of its divisors is an integer number (3125250).

Almost surely, 2^66002904 is an apocalyptic number.

It is an amenable number.

66002904 is an abundant number, since it is smaller than the sum of its proper divisors (134013096).

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

66002904 is a wasteful number, since it uses less digits than its factorization.

66002904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27805 (or 27795 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 66002904 is about 8124.2171315149. The cubic root of 66002904 is about 404.1299291273.

The spelling of 66002904 in words is "sixty-six million, two thousand, nine hundred four".