756868656 has 20 divisors (see below), whose sum is σ = 1955244152. Its totient is φ = 252289536.

The previous prime is 756868639. The next prime is 756868661. The reversal of 756868656 is 656868657.

It is a junction number, because it is equal to n+sod(n) for n = 756868596 and 756868605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7884001 + ... + 7884096.

Almost surely, 2^756868656 is an apocalyptic number.

It is an amenable number.

756868656 is an abundant number, since it is smaller than the sum of its proper divisors (1198375496).

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

756868656 is a wasteful number, since it uses less digits than its factorization.

756868656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15768108 (or 15768102 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 57.

The square root of 756868656 is about 27511.2459914123. The cubic root of 756868656 is about 911.3254669068.

Subtracting from 756868656 its reverse (656868657), we obtain a palindrome (99999999).

The spelling of 756868656 in words is "seven hundred fifty-six million, eight hundred sixty-eight thousand, six hundred fifty-six".