640600575 has 24 divisors (see below), whose sum is σ = 1095651600. Its totient is φ = 329871360.

The previous prime is 640600567. The next prime is 640600607. The reversal of 640600575 is 575006046.

It is not a de Polignac number, because 640600575 - 2³ = 640600567 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145090 + ... + 149439.

It is an arithmetic number, because the mean of its divisors is an integer number (45652150).

Almost surely, 2^640600575 is an apocalyptic number.

640600575 is a deficient number, since it is larger than the sum of its proper divisors (455051025).

640600575 is a wasteful number, since it uses less digits than its factorization.

640600575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294571 (or 294566 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 640600575 is about 25310.0884036386. The cubic root of 640600575 is about 862.0433541573.

The spelling of 640600575 in words is "six hundred forty million, six hundred thousand, five hundred seventy-five".