791105261 has 4 divisors (see below), whose sum is σ = 832742400. Its totient is φ = 749468124.

The previous prime is 791105243. The next prime is 791105327. The reversal of 791105261 is 162501197.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 162501197 = 67 ⋅2425391.

It is a cyclic number.

It is not a de Polignac number, because 791105261 - 2¹⁴ = 791088877 is a prime.

It is a super-3 number, since 3×791105261³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791105221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20818541 + ... + 20818578.

It is an arithmetic number, because the mean of its divisors is an integer number (208185600).

Almost surely, 2^791105261 is an apocalyptic number.

It is an amenable number.

791105261 is a deficient number, since it is larger than the sum of its proper divisors (41637139).

791105261 is a wasteful number, since it uses less digits than its factorization.

791105261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41637138.

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 791105261 is about 28126.5934837477. The cubic root of 791105261 is about 924.8644597117.

The spelling of 791105261 in words is "seven hundred ninety-one million, one hundred five thousand, two hundred sixty-one".