622977908 has 72 divisors (see below), whose sum is σ = 1316263872. Its totient is φ = 252692352.

The previous prime is 622977889. The next prime is 622977911. The reversal of 622977908 is 809779226.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2029091 + ... + 2029397.

Almost surely, 2^622977908 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 622977908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (658131936).

622977908 is an abundant number, since it is smaller than the sum of its proper divisors (693285964).

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

622977908 is a wasteful number, since it uses less digits than its factorization.

622977908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 622977908 is about 24959.5253961288. The cubic root of 622977908 is about 854.0649161695.

The spelling of 622977908 in words is "six hundred twenty-two million, nine hundred seventy-seven thousand, nine hundred eight".