64009375 has 12 divisors (see below), whose sum is σ = 80010504. Its totient is φ = 51205000.

The previous prime is 64009367. The next prime is 64009399. The reversal of 64009375 is 57390046.

It is not a de Polignac number, because 64009375 - 2³ = 64009367 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64009375.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7117 + ... + 13366.

It is an arithmetic number, because the mean of its divisors is an integer number (6667542).

Almost surely, 2^64009375 is an apocalyptic number.

64009375 is a deficient number, since it is larger than the sum of its proper divisors (16001129).

64009375 is an frugal number, since it uses more digits than its factorization.

64009375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20508 (or 20488 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 64009375 is about 8000.5859160439. The cubic root of 64009375 is about 400.0195302964.

The spelling of 64009375 in words is "sixty-four million, nine thousand, three hundred seventy-five".