622977889 has 2 divisors, whose sum is σ = 622977890. Its totient is φ = 622977888.

The previous prime is 622977881. The next prime is 622977911. The reversal of 622977889 is 988779226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 556016400 + 66961489 = 23580^2 + 8183^2 .

It is a cyclic number.

It is not a de Polignac number, because 622977889 - 2³ = 622977881 is a prime.

It is not a weakly prime, because it can be changed into another prime (622977881) 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 as a sum of consecutive naturals, namely, 311488944 + 311488945.

It is an arithmetic number, because the mean of its divisors is an integer number (311488945).

Almost surely, 2^622977889 is an apocalyptic number.

It is an amenable number.

622977889 is a deficient number, since it is larger than the sum of its proper divisors (1).

622977889 is an equidigital number, since it uses as much as digits as its factorization.

622977889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6096384, while the sum is 58.

The square root of 622977889 is about 24959.5250155126. The cubic root of 622977889 is about 854.0649074869.

The spelling of 622977889 in words is "six hundred twenty-two million, nine hundred seventy-seven thousand, eight hundred eighty-nine".