622998677 has 64 divisors (see below), whose sum is σ = 836075520. Its totient is φ = 451562496.

The previous prime is 622998667. The next prime is 622998679. The reversal of 622998677 is 776899226.

It is a happy number.

It is not a de Polignac number, because 622998677 - 2⁶ = 622998613 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622998679) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3730448 + ... + 3730614.

It is an arithmetic number, because the mean of its divisors is an integer number (13063680).

Almost surely, 2^622998677 is an apocalyptic number.

It is an amenable number.

622998677 is a deficient number, since it is larger than the sum of its proper divisors (213076843).

622998677 is a wasteful number, since it uses less digits than its factorization.

622998677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290.

The product of its digits is 4572288, while the sum is 56.

The square root of 622998677 is about 24959.9414462454. The cubic root of 622998677 is about 854.0744070770.

The spelling of 622998677 in words is "six hundred twenty-two million, nine hundred ninety-eight thousand, six hundred seventy-seven".