860825091 has 24 divisors (see below), whose sum is σ = 1371251280. Its totient is φ = 478602432.

The previous prime is 860825083. The next prime is 860825093. The reversal of 860825091 is 190528068.

It is not a de Polignac number, because 860825091 - 2³ = 860825083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (860825093) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73696 + ... + 84573.

It is an arithmetic number, because the mean of its divisors is an integer number (57135470).

Almost surely, 2^860825091 is an apocalyptic number.

860825091 is a deficient number, since it is larger than the sum of its proper divisors (510426189).

860825091 is a wasteful number, since it uses less digits than its factorization.

860825091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158323 (or 158316 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 860825091 is about 29339.8209094739. The cubic root of 860825091 is about 951.2725664181.

The spelling of 860825091 in words is "eight hundred sixty million, eight hundred twenty-five thousand, ninety-one".