622909867 has 2 divisors, whose sum is σ = 622909868. Its totient is φ = 622909866.

The previous prime is 622909849. The next prime is 622909891. The reversal of 622909867 is 768909226.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-622909867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 622909867.

It is not a weakly prime, because it can be changed into another prime (622909817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311454933 + 311454934.

It is an arithmetic number, because the mean of its divisors is an integer number (311454934).

Almost surely, 2^622909867 is an apocalyptic number.

622909867 is a deficient number, since it is larger than the sum of its proper divisors (1).

622909867 is an equidigital number, since it uses as much as digits as its factorization.

622909867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 622909867 is about 24958.1623321910. The cubic root of 622909867 is about 854.0338216764.

The spelling of 622909867 in words is "six hundred twenty-two million, nine hundred nine thousand, eight hundred sixty-seven".