64404004 has 12 divisors (see below), whose sum is σ = 128808064. Its totient is φ = 27601704.

The previous prime is 64403947. The next prime is 64404061. The reversal of 64404004 is 40040446.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (64403947) and next prime (64404061).

64404004 is an admirable number.

It is a hoax number, since the sum of its digits (22) 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, 1150044 + ... + 1150099.

Almost surely, 2^64404004 is an apocalyptic number.

It is an amenable number.

64404004 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64404004 is a wasteful number, since it uses less digits than its factorization.

64404004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300154 (or 2300152 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 64404004 is about 8025.2105268335. The cubic root of 64404004 is about 400.8399101430.

The spelling of 64404004 in words is "sixty-four million, four hundred four thousand, four".