501565664 has 24 divisors (see below), whose sum is σ = 988090488. Its totient is φ = 250622080.

The previous prime is 501565657. The next prime is 501565679. The reversal of 501565664 is 466565105.

It is a congruent number.

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, 57734 + ... + 65850.

It is an arithmetic number, because the mean of its divisors is an integer number (41170437).

Almost surely, 2^501565664 is an apocalyptic number.

It is an amenable number.

501565664 is a deficient number, since it is larger than the sum of its proper divisors (486524824).

501565664 is a wasteful number, since it uses less digits than its factorization.

501565664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10058 (or 10050 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 501565664 is about 22395.6617227534. The cubic root of 501565664 is about 794.5281083339.

The spelling of 501565664 in words is "five hundred one million, five hundred sixty-five thousand, six hundred sixty-four".