626940880 has 20 divisors (see below), whose sum is σ = 1457637732. Its totient is φ = 250776320.

The previous prime is 626940871. The next prime is 626940887. The reversal of 626940880 is 88049626.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 251666496 + 375274384 = 15864^2 + 19372^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (626940887) 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, 3918301 + ... + 3918460.

Almost surely, 2^626940880 is an apocalyptic number.

It is an amenable number.

626940880 is an abundant number, since it is smaller than the sum of its proper divisors (830696852).

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

626940880 is a wasteful number, since it uses less digits than its factorization.

626940880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7836774 (or 7836768 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 626940880 is about 25038.7875105805. The cubic root of 626940880 is about 855.8720876212.

The spelling of 626940880 in words is "six hundred twenty-six million, nine hundred forty thousand, eight hundred eighty".