622908121 has 24 divisors (see below), whose sum is σ = 705645864. Its totient is φ = 549120000.

The previous prime is 622908073. The next prime is 622908131. The reversal of 622908121 is 121809226.

It can be written as a sum of positive squares in 4 ways, for example, as 10890000 + 612018121 = 3300^2 + 24739^2 .

It is not a de Polignac number, because 622908121 - 2²³ = 614519513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (622908131) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1195341 + ... + 1195861.

It is an arithmetic number, because the mean of its divisors is an integer number (29401911).

Almost surely, 2^622908121 is an apocalyptic number.

It is an amenable number.

622908121 is a deficient number, since it is larger than the sum of its proper divisors (82737743).

622908121 is a wasteful number, since it uses less digits than its factorization.

622908121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 622908121 is about 24958.1273536297. The cubic root of 622908121 is about 854.0330237309.

The spelling of 622908121 in words is "six hundred twenty-two million, nine hundred eight thousand, one hundred twenty-one".