620958906 has 32 divisors (see below), whose sum is σ = 1383595200. Its totient is φ = 206433360.

The previous prime is 620958857. The next prime is 620958953. The reversal of 620958906 is 609859026.

620958906 is a `hidden beast` number, since 62 + 0 + 9 + 589 + 0 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5296 + ... + 35636.

It is an arithmetic number, because the mean of its divisors is an integer number (43237350).

Almost surely, 2^620958906 is an apocalyptic number.

620958906 is an abundant number, since it is smaller than the sum of its proper divisors (762636294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620958906 is a wasteful number, since it uses less digits than its factorization.

620958906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30731 (or 30725 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 620958906 is about 24919.0470524055. The cubic root of 620958906 is about 853.1412745597.

The spelling of 620958906 in words is "six hundred twenty million, nine hundred fifty-eight thousand, nine hundred six".