621922797 has 12 divisors (see below), whose sum is σ = 898910844. Its totient is φ = 414348480.

The previous prime is 621922793. The next prime is 621922799. The reversal of 621922797 is 797229126.

621922797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 479215881 + 142706916 = 21891^2 + 11946^2 .

It is not a de Polignac number, because 621922797 - 2² = 621922793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621922793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6904 + ... + 35937.

It is an arithmetic number, because the mean of its divisors is an integer number (74909237).

Almost surely, 2^621922797 is an apocalyptic number.

It is an amenable number.

621922797 is a deficient number, since it is larger than the sum of its proper divisors (276988047).

621922797 is a wasteful number, since it uses less digits than its factorization.

621922797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44460 (or 44457 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 621922797 is about 24938.3799995108. The cubic root of 621922797 is about 853.5824793167.

The spelling of 621922797 in words is "six hundred twenty-one million, nine hundred twenty-two thousand, seven hundred ninety-seven".