622942881 has 16 divisors (see below), whose sum is σ = 937344960. Its totient is φ = 364521920.

The previous prime is 622942877. The next prime is 622942913. The reversal of 622942881 is 188249226.

It is a cyclic number.

It is not a de Polignac number, because 622942881 - 2² = 622942877 is a prime.

It is a super-2 number, since 2×622942881² = 776115665977160322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (622942681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324510 + ... + 326423.

It is an arithmetic number, because the mean of its divisors is an integer number (58584060).

Almost surely, 2^622942881 is an apocalyptic number.

It is an amenable number.

622942881 is a deficient number, since it is larger than the sum of its proper divisors (314402079).

622942881 is a wasteful number, since it uses less digits than its factorization.

622942881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650976.

The product of its digits is 110592, while the sum is 42.

The square root of 622942881 is about 24958.8237102633. The cubic root of 622942881 is about 854.0489092388.

The spelling of 622942881 in words is "six hundred twenty-two million, nine hundred forty-two thousand, eight hundred eighty-one".