622866840 has 64 divisors (see below), whose sum is σ = 1896514560. Its totient is φ = 163616640.

The previous prime is 622866821. The next prime is 622866857. The reversal of 622866840 is 48668226.

It is a junction number, because it is equal to n+sod(n) for n = 622866792 and 622866801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30696 + ... + 46775.

It is an arithmetic number, because the mean of its divisors is an integer number (29633040).

Almost surely, 2^622866840 is an apocalyptic number.

622866840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

622866840 is an abundant number, since it is smaller than the sum of its proper divisors (1273647720).

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

622866840 is a wasteful number, since it uses less digits than its factorization.

622866840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77552 (or 77548 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 622866840 is about 24957.3003347718. The cubic root of 622866840 is about 854.0141573230.

The spelling of 622866840 in words is "six hundred twenty-two million, eight hundred sixty-six thousand, eight hundred forty".