620664508 has 12 divisors (see below), whose sum is σ = 1103969272. Its totient is φ = 305244720.

The previous prime is 620664481. The next prime is 620664553. The reversal of 620664508 is 805466026.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 1271610 + ... + 1272097.

Almost surely, 2^620664508 is an apocalyptic number.

It is an amenable number.

620664508 is a deficient number, since it is larger than the sum of its proper divisors (483304764).

620664508 is a wasteful number, since it uses less digits than its factorization.

620664508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2543772 (or 2543770 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 620664508 is about 24913.1392642517. The cubic root of 620664508 is about 853.0064278545.

The spelling of 620664508 in words is "six hundred twenty million, six hundred sixty-four thousand, five hundred eight".