64728004 has 12 divisors (see below), whose sum is σ = 123571728. Its totient is φ = 29421800.

The previous prime is 64727933. The next prime is 64728019. The reversal of 64728004 is 40082746.

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, 735502 + ... + 735589.

It is an arithmetic number, because the mean of its divisors is an integer number (10297644).

Almost surely, 2^64728004 is an apocalyptic number.

It is an amenable number.

64728004 is a deficient number, since it is larger than the sum of its proper divisors (58843724).

64728004 is a wasteful number, since it uses less digits than its factorization.

64728004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471106 (or 1471104 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 64728004 is about 8045.3715886838. The cubic root of 64728004 is about 401.5109603108.

The spelling of 64728004 in words is "sixty-four million, seven hundred twenty-eight thousand, four".