622424864 has 24 divisors (see below), whose sum is σ = 1242189900. Its totient is φ = 306948096.

The previous prime is 622424821. The next prime is 622424897. The reversal of 622424864 is 468424226.

It can be written as a sum of positive squares in 2 ways, for example, as 620408464 + 2016400 = 24908^2 + 1420^2 .

It is a super-2 number, since 2×622424864² = 774825422650836992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130889 + ... + 135560.

Almost surely, 2^622424864 is an apocalyptic number.

It is an amenable number.

622424864 is a deficient number, since it is larger than the sum of its proper divisors (619765036).

622424864 is a wasteful number, since it uses less digits than its factorization.

622424864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266532 (or 266524 counting only the distinct ones).

The product of its digits is 147456, while the sum is 38.

The square root of 622424864 is about 24948.4441198244. Note that the first 3 decimals coincide. The cubic root of 622424864 is about 853.8121114225.

The spelling of 622424864 in words is "six hundred twenty-two million, four hundred twenty-four thousand, eight hundred sixty-four".