620996772 has 48 divisors (see below), whose sum is σ = 1589059584. Its totient is φ = 187188000.

The previous prime is 620996767. The next prime is 620996773. The reversal of 620996772 is 277699026.

It is not an unprimeable number, because it can be changed into a prime (620996773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12897 + ... + 37527.

It is an arithmetic number, because the mean of its divisors is an integer number (33105408).

Almost surely, 2^620996772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620996772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (794529792).

620996772 is an abundant number, since it is smaller than the sum of its proper divisors (968062812).

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

620996772 is a wasteful number, since it uses less digits than its factorization.

620996772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24840 (or 24838 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 48.

The square root of 620996772 is about 24919.8068210811. The cubic root of 620996772 is about 853.1586156916.

The spelling of 620996772 in words is "six hundred twenty million, nine hundred ninety-six thousand, seven hundred seventy-two".