626873221 has 12 divisors (see below), whose sum is σ = 694597728. Its totient is φ = 565188624.

The previous prime is 626873189. The next prime is 626873243. The reversal of 626873221 is 122378626.

626873221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 626873221 - 2⁵ = 626873189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (626873321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35865 + ... + 50398.

It is an arithmetic number, because the mean of its divisors is an integer number (57883144).

Almost surely, 2^626873221 is an apocalyptic number.

It is an amenable number.

626873221 is a deficient number, since it is larger than the sum of its proper divisors (67724507).

626873221 is a wasteful number, since it uses less digits than its factorization.

626873221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86332 (or 86319 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 626873221 is about 25037.4363903336. The cubic root of 626873221 is about 855.8412981509.

The spelling of 626873221 in words is "six hundred twenty-six million, eight hundred seventy-three thousand, two hundred twenty-one".