2556786696 has 32 divisors (see below), whose sum is σ = 6496756800. Its totient is φ = 838290240.

The previous prime is 2556786671. The next prime is 2556786709. The reversal of 2556786696 is 6966876552.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 871756 + ... + 874683.

It is an arithmetic number, because the mean of its divisors is an integer number (203023650).

Almost surely, 2^2556786696 is an apocalyptic number.

It is an amenable number.

2556786696 is an abundant number, since it is smaller than the sum of its proper divisors (3939970104).

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

2556786696 is a wasteful number, since it uses less digits than its factorization.

2556786696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746509 (or 1746505 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 60.

The square root of 2556786696 is about 50564.6783436818. The cubic root of 2556786696 is about 1367.4081559748.

The spelling of 2556786696 in words is "two billion, five hundred fifty-six million, seven hundred eighty-six thousand, six hundred ninety-six".