620660400624 has 60 divisors (see below), whose sum is σ = 1894895015832. Its totient is φ = 188078908800.

The previous prime is 620660400611. The next prime is 620660400631. The reversal of 620660400624 is 426004066026.

620660400624 is a `hidden beast` number, since 6 + 20 + 6 + 6 + 0 + 4 + 0 + 0 + 624 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195913947 + ... + 195917114.

Almost surely, 2^620660400624 is an apocalyptic number.

It is an amenable number.

620660400624 is an abundant number, since it is smaller than the sum of its proper divisors (1274234615208).

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

620660400624 is a wasteful number, since it uses less digits than its factorization.

620660400624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391831086 (or 391831077 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 620660400624 in words is "six hundred twenty billion, six hundred sixty million, four hundred thousand, six hundred twenty-four".