622421524 has 6 divisors (see below), whose sum is σ = 1089237674. Its totient is φ = 311210760.

The previous prime is 622421509. The next prime is 622421537. The reversal of 622421524 is 425124226.

It can be written as a sum of positive squares in only one way, i.e., 354117124 + 268304400 = 18818^2 + 16380^2 .

It is a junction number, because it is equal to n+sod(n) for n = 622421492 and 622421501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77802687 + ... + 77802694.

Almost surely, 2^622421524 is an apocalyptic number.

It is an amenable number.

622421524 is a deficient number, since it is larger than the sum of its proper divisors (466816150).

622421524 is a wasteful number, since it uses less digits than its factorization.

622421524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155605385 (or 155605383 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 622421524 is about 24948.3771816926. The cubic root of 622421524 is about 853.8105842033.

The spelling of 622421524 in words is "six hundred twenty-two million, four hundred twenty-one thousand, five hundred twenty-four".