791866765 has 8 divisors (see below), whose sum is σ = 959649048. Its totient is φ = 627220800.

The previous prime is 791866723. The next prime is 791866807. The reversal of 791866765 is 567668197.

It is an interprime number because it is at equal distance from previous prime (791866723) and next prime (791866807).

It can be written as a sum of positive squares in 4 ways, for example, as 87123556 + 704743209 = 9334^2 + 26547^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 791866765 - 2¹⁵ = 791833997 is a prime.

It is a Duffinian number.

It is a congruent 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, 783522 + ... + 784531.

It is an arithmetic number, because the mean of its divisors is an integer number (119956131).

Almost surely, 2^791866765 is an apocalyptic number.

It is an amenable number.

791866765 is a deficient number, since it is larger than the sum of its proper divisors (167782283).

791866765 is a wasteful number, since it uses less digits than its factorization.

791866765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568159.

The product of its digits is 3810240, while the sum is 55.

The square root of 791866765 is about 28140.1273095912. The cubic root of 791866765 is about 925.1611172964.

The spelling of 791866765 in words is "seven hundred ninety-one million, eight hundred sixty-six thousand, seven hundred sixty-five".