64001504 has 24 divisors (see below), whose sum is σ = 144003888. Its totient is φ = 27429120.

The previous prime is 64001503. The next prime is 64001507. The reversal of 64001504 is 40510046.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64001503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142637 + ... + 143084.

It is an arithmetic number, because the mean of its divisors is an integer number (6000162).

Almost surely, 2^64001504 is an apocalyptic number.

It is an amenable number.

64001504 is an abundant number, since it is smaller than the sum of its proper divisors (80002384).

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

64001504 is a wasteful number, since it uses less digits than its factorization.

64001504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285738 (or 285730 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 64001504 is about 8000.0939994478. The cubic root of 64001504 is about 400.0031333088.

The spelling of 64001504 in words is "sixty-four million, one thousand, five hundred four".