622722628 has 18 divisors (see below), whose sum is σ = 1197841358. Its totient is φ = 283055520.

The previous prime is 622722623. The next prime is 622722629. The reversal of 622722628 is 826227226.

It can be written as a sum of positive squares in only one way, i.e., 406103104 + 216619524 = 20152^2 + 14718^2 .

It is not an unprimeable number, because it can be changed into a prime (622722623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 642825 + ... + 643792.

Almost surely, 2^622722628 is an apocalyptic number.

It is an amenable number.

622722628 is a deficient number, since it is larger than the sum of its proper divisors (575118730).

622722628 is a wasteful number, since it uses less digits than its factorization.

622722628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286643 (or 1286630 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 622722628 is about 24954.4109928485. The cubic root of 622722628 is about 853.9482424340.

The spelling of 622722628 in words is "six hundred twenty-two million, seven hundred twenty-two thousand, six hundred twenty-eight".