620505624 has 16 divisors (see below), whose sum is σ = 1551264120. Its totient is φ = 206835200.

The previous prime is 620505581. The next prime is 620505649. The reversal of 620505624 is 426505026.

It is a junction number, because it is equal to n+sod(n) for n = 620505591 and 620505600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12927177 + ... + 12927224.

Almost surely, 2^620505624 is an apocalyptic number.

It is an amenable number.

620505624 is an abundant number, since it is smaller than the sum of its proper divisors (930758496).

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

620505624 is a wasteful number, since it uses less digits than its factorization.

620505624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25854410 (or 25854406 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 620505624 is about 24909.9503010343. The cubic root of 620505624 is about 852.9336345617.

The spelling of 620505624 in words is "six hundred twenty million, five hundred five thousand, six hundred twenty-four".