620385405264 has 40 divisors (see below), whose sum is σ = 1780735886720. Its totient is φ = 206795134944.

The previous prime is 620385405229. The next prime is 620385405313. The reversal of 620385405264 is 462504583026.

620385405264 is a `hidden beast` number, since 6 + 2 + 0 + 3 + 85 + 40 + 526 + 4 = 666.

It is a hoax number, since the sum of its digits (45) 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 7 ways as a sum of consecutive naturals, for example, 718038232 + ... + 718039095.

It is an arithmetic number, because the mean of its divisors is an integer number (44518397168).

Almost surely, 2^620385405264 is an apocalyptic number.

It is an amenable number.

620385405264 is an abundant number, since it is smaller than the sum of its proper divisors (1160350481456).

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

620385405264 is a wasteful number, since it uses less digits than its factorization.

620385405264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436077344 (or 1436077332 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

The spelling of 620385405264 in words is "six hundred twenty billion, three hundred eighty-five million, four hundred five thousand, two hundred sixty-four".