620532664 has 16 divisors (see below), whose sum is σ = 1169407800. Its totient is φ = 308690592.

The previous prime is 620532659. The next prime is 620532683. The reversal of 620532664 is 466235026.

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, 195294 + ... + 198445.

Almost surely, 2^620532664 is an apocalyptic number.

It is an amenable number.

620532664 is a deficient number, since it is larger than the sum of its proper divisors (548875136).

620532664 is a wasteful number, since it uses less digits than its factorization.

620532664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393942 (or 393938 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 620532664 is about 24910.4930501185. The cubic root of 620532664 is about 852.9460239152.

The spelling of 620532664 in words is "six hundred twenty million, five hundred thirty-two thousand, six hundred sixty-four".