622723844 has 12 divisors (see below), whose sum is σ = 1127345100. Its totient is φ = 300625248.

The previous prime is 622723837. The next prime is 622723847. The reversal of 622723844 is 448327226.

It can be written as a sum of positive squares in 2 ways, for example, as 411602944 + 211120900 = 20288^2 + 14530^2 .

It is a super-2 number, since 2×622723844² = 775569971772272672, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 622723798 and 622723807.

It is not an unprimeable number, because it can be changed into a prime (622723847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2684039 + ... + 2684270.

It is an arithmetic number, because the mean of its divisors is an integer number (93945425).

Almost surely, 2^622723844 is an apocalyptic number.

It is an amenable number.

622723844 is a deficient number, since it is larger than the sum of its proper divisors (504621256).

622723844 is a wasteful number, since it uses less digits than its factorization.

622723844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5368342 (or 5368340 counting only the distinct ones).

The product of its digits is 129024, while the sum is 38.

The square root of 622723844 is about 24954.4353572667. The cubic root of 622723844 is about 853.9487982729.

The spelling of 622723844 in words is "six hundred twenty-two million, seven hundred twenty-three thousand, eight hundred forty-four".