791540656 has 10 divisors (see below), whose sum is σ = 1533610052. Its totient is φ = 395770320.

The previous prime is 791540647. The next prime is 791540707. The reversal of 791540656 is 656045197.

It is a super-2 number, since 2×791540656² = 1253073220201820672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24735630 + ... + 24735661.

Almost surely, 2^791540656 is an apocalyptic number.

It is an amenable number.

791540656 is a deficient number, since it is larger than the sum of its proper divisors (742069396).

791540656 is a wasteful number, since it uses less digits than its factorization.

791540656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49471299 (or 49471293 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 791540656 is about 28134.3323361334. The cubic root of 791540656 is about 925.0340989621.

The spelling of 791540656 in words is "seven hundred ninety-one million, five hundred forty thousand, six hundred fifty-six".