622721124 has 72 divisors (see below), whose sum is σ = 1663319840. Its totient is φ = 195892992.

The previous prime is 622721119. The next prime is 622721129. The reversal of 622721124 is 421127226.

622721124 is a `hidden beast` number, since 622 + 7 + 2 + 11 + 24 = 666.

622721124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (622721119) and next prime (622721129).

It is not an unprimeable number, because it can be changed into a prime (622721129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191964 + ... + 195180.

Almost surely, 2^622721124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 622721124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (831659920).

622721124 is an abundant number, since it is smaller than the sum of its proper divisors (1040598716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

622721124 is a wasteful number, since it uses less digits than its factorization.

622721124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3529 (or 3524 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 622721124 is about 24954.3808578774. The cubic root of 622721124 is about 853.9475549480.

The spelling of 622721124 in words is "six hundred twenty-two million, seven hundred twenty-one thousand, one hundred twenty-four".