620759904 has 24 divisors (see below), whose sum is σ = 1629495000. Its totient is φ = 206919936.

The previous prime is 620759899. The next prime is 620759921. The reversal of 620759904 is 409957026.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (42) 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, 3233029 + ... + 3233220.

It is an arithmetic number, because the mean of its divisors is an integer number (67895625).

Almost surely, 2^620759904 is an apocalyptic number.

It is an amenable number.

620759904 is an abundant number, since it is smaller than the sum of its proper divisors (1008735096).

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

620759904 is a wasteful number, since it uses less digits than its factorization.

620759904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6466262 (or 6466254 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 620759904 is about 24915.0537627355. The cubic root of 620759904 is about 853.0501279165.

The spelling of 620759904 in words is "six hundred twenty million, seven hundred fifty-nine thousand, nine hundred four".