666002604 has 12 divisors (see below), whose sum is σ = 1554006104. Its totient is φ = 222000864.

The previous prime is 666002567. The next prime is 666002639. The reversal of 666002604 is 406200666.

666002604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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, 27750097 + ... + 27750120.

Almost surely, 2^666002604 is an apocalyptic number.

It is an amenable number.

666002604 is an abundant number, since it is smaller than the sum of its proper divisors (888003500).

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

666002604 is a wasteful number, since it uses less digits than its factorization.

666002604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55500224 (or 55500222 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 666002604 is about 25807.0262525538. The cubic root of 666002604 is about 873.2903122888.

The spelling of 666002604 in words is "six hundred sixty-six million, two thousand, six hundred four".