626644040 has 32 divisors (see below), whose sum is σ = 1538127360. Its totient is φ = 227870400.

The previous prime is 626644027. The next prime is 626644061. The reversal of 626644040 is 40446626.

626644040 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 626643988 and 626644006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 711656 + ... + 712535.

It is an arithmetic number, because the mean of its divisors is an integer number (48066480).

Almost surely, 2^626644040 is an apocalyptic number.

It is an amenable number.

626644040 is an abundant number, since it is smaller than the sum of its proper divisors (911483320).

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

626644040 is a wasteful number, since it uses less digits than its factorization.

626644040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424213 (or 1424209 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 626644040 is about 25032.8592054523. The cubic root of 626644040 is about 855.7369886639.

The spelling of 626644040 in words is "six hundred twenty-six million, six hundred forty-four thousand, forty".