622963989 has 6 divisors (see below), whose sum is σ = 899836886. Its totient is φ = 415309320.

The previous prime is 622963967. The next prime is 622964009. The reversal of 622963989 is 989369226.

622963989 is a `hidden beast` number, since 622 + 9 + 6 + 3 + 9 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 535691025 + 87272964 = 23145^2 + 9342^2 .

It is a de Polignac number, because none of the positive numbers 2^k-622963989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622963909) 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 in 5 ways as a sum of consecutive naturals, for example, 34609102 + ... + 34609119.

Almost surely, 2^622963989 is an apocalyptic number.

It is an amenable number.

622963989 is a deficient number, since it is larger than the sum of its proper divisors (276872897).

622963989 is a wasteful number, since it uses less digits than its factorization.

622963989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69218227 (or 69218224 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The square root of 622963989 is about 24959.2465631477. The cubic root of 622963989 is about 854.0585554206.

The spelling of 622963989 in words is "six hundred twenty-two million, nine hundred sixty-three thousand, nine hundred eighty-nine".