622818956 has 6 divisors (see below), whose sum is σ = 1089933180. Its totient is φ = 311409476.

The previous prime is 622818929. The next prime is 622818961. The reversal of 622818956 is 659818226.

It is a self number, because there is not a number n which added to its sum of digits gives 622818956.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77852366 + ... + 77852373.

It is an arithmetic number, because the mean of its divisors is an integer number (181655530).

Almost surely, 2^622818956 is an apocalyptic number.

It is an amenable number.

622818956 is a deficient number, since it is larger than the sum of its proper divisors (467114224).

622818956 is a wasteful number, since it uses less digits than its factorization.

622818956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155704743 (or 155704741 counting only the distinct ones).

The product of its digits is 414720, while the sum is 47.

The square root of 622818956 is about 24956.3409978306. The cubic root of 622818956 is about 853.9922721413.

The spelling of 622818956 in words is "six hundred twenty-two million, eight hundred eighteen thousand, nine hundred fifty-six".