791074643 has 4 divisors (see below), whose sum is σ = 791161728. Its totient is φ = 790987560.

The previous prime is 791074619. The next prime is 791074649. The reversal of 791074643 is 346470197.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 791074643 - 2¹⁸ = 790812499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 791074643.

It is not an unprimeable number, because it can be changed into a prime (791074649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28088 + ... + 48693.

It is an arithmetic number, because the mean of its divisors is an integer number (197790432).

Almost surely, 2^791074643 is an apocalyptic number.

791074643 is a deficient number, since it is larger than the sum of its proper divisors (87085).

791074643 is a wasteful number, since it uses less digits than its factorization.

791074643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87084.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 791074643 is about 28126.0491893191. The cubic root of 791074643 is about 924.8525279386.

The spelling of 791074643 in words is "seven hundred ninety-one million, seventy-four thousand, six hundred forty-three".