2626640856 has 48 divisors (see below), whose sum is σ = 8130080400. Its totient is φ = 750468672.

The previous prime is 2626640839. The next prime is 2626640869. The reversal of 2626640856 is 6580466262.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2605291 + ... + 2606298.

It is an arithmetic number, because the mean of its divisors is an integer number (169376675).

Almost surely, 2^2626640856 is an apocalyptic number.

It is an amenable number.

2626640856 is an abundant number, since it is smaller than the sum of its proper divisors (5503439544).

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

2626640856 is a wasteful number, since it uses less digits than its factorization.

2626640856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5211608 (or 5211601 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The square root of 2626640856 is about 51250.7644430793. The cubic root of 2626640856 is about 1379.7494567213.

The spelling of 2626640856 in words is "two billion, six hundred twenty-six million, six hundred forty thousand, eight hundred fifty-six".