791664456 has 32 divisors (see below), whose sum is σ = 2159085600. Its totient is φ = 239898240.

The previous prime is 791664407. The next prime is 791664457. The reversal of 791664456 is 654466197.

It is a super-2 number, since 2×791664456² = 1253465221787551872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (791664457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1499101 + ... + 1499628.

It is an arithmetic number, because the mean of its divisors is an integer number (67471425).

Almost surely, 2^791664456 is an apocalyptic number.

It is an amenable number.

791664456 is an abundant number, since it is smaller than the sum of its proper divisors (1367421144).

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

791664456 is a wasteful number, since it uses less digits than its factorization.

791664456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998749 (or 2998745 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 791664456 is about 28136.5324089519. The cubic root of 791664456 is about 925.0823227439.

The spelling of 791664456 in words is "seven hundred ninety-one million, six hundred sixty-four thousand, four hundred fifty-six".