620632564 has 24 divisors (see below), whose sum is σ = 1106169120. Its totient is φ = 304600224.

The previous prime is 620632553. The next prime is 620632601. The reversal of 620632564 is 465236026.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199767 + ... + 202849.

It is an arithmetic number, because the mean of its divisors is an integer number (46090380).

Almost surely, 2^620632564 is an apocalyptic number.

It is an amenable number.

620632564 is a deficient number, since it is larger than the sum of its proper divisors (485536556).

620632564 is a wasteful number, since it uses less digits than its factorization.

620632564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3999 (or 3997 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 620632564 is about 24912.4981485198. The cubic root of 620632564 is about 852.9917935905.

The spelling of 620632564 in words is "six hundred twenty million, six hundred thirty-two thousand, five hundred sixty-four".