805860791 has 6 divisors (see below), whose sum is σ = 818072640. Its totient is φ = 793828596.

The previous prime is 805860739. The next prime is 805860799. The reversal of 805860791 is 197068508.

It is a happy number.

It is not a de Polignac number, because 805860791 - 2¹⁴ = 805844407 is a prime.

It is a super-2 number, since 2×805860791² = 1298823228942291362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805860799) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85271 + ... + 94248.

It is an arithmetic number, because the mean of its divisors is an integer number (136345440).

Almost surely, 2^805860791 is an apocalyptic number.

805860791 is a deficient number, since it is larger than the sum of its proper divisors (12211849).

805860791 is an equidigital number, since it uses as much as digits as its factorization.

805860791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179653 (or 179586 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 805860791 is about 28387.6873133406. The cubic root of 805860791 is about 930.5792017695.

The spelling of 805860791 in words is "eight hundred five million, eight hundred sixty thousand, seven hundred ninety-one".