4004660644 has 12 divisors (see below), whose sum is σ = 7010176768. Its totient is φ = 2001753000.

The previous prime is 4004660599. The next prime is 4004660689. The reversal of 4004660644 is 4460664004.

4004660644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4004660599) and next prime (4004660689).

It is a hoax number, since the sum of its digits (34) 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, 128532 + ... + 156619.

Almost surely, 2^4004660644 is an apocalyptic number.

It is an amenable number.

4004660644 is a deficient number, since it is larger than the sum of its proper divisors (3005516124).

4004660644 is a wasteful number, since it uses less digits than its factorization.

4004660644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288666 (or 288664 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

The square root of 4004660644 is about 63282.3881028521. The cubic root of 4004660644 is about 1588.0173386048.

The spelling of 4004660644 in words is "four billion, four million, six hundred sixty thousand, six hundred forty-four".