620555772 has 48 divisors (see below), whose sum is σ = 1481024160. Its totient is φ = 202180608.

The previous prime is 620555707. The next prime is 620555779. The reversal of 620555772 is 277555026.

It is a self number, because there is not a number n which added to its sum of digits gives 620555772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620555779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95854 + ... + 102122.

It is an arithmetic number, because the mean of its divisors is an integer number (30854670).

Almost surely, 2^620555772 is an apocalyptic number.

It is an amenable number.

620555772 is an abundant number, since it is smaller than the sum of its proper divisors (860468388).

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

620555772 is a wasteful number, since it uses less digits than its factorization.

620555772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6462 (or 6460 counting only the distinct ones).

The product of its (nonzero) digits is 147000, while the sum is 39.

The square root of 620555772 is about 24910.9568664072. The cubic root of 620555772 is about 852.9566113955.

The spelling of 620555772 in words is "six hundred twenty million, five hundred fifty-five thousand, seven hundred seventy-two".