860585261 has 8 divisors (see below), whose sum is σ = 872579064. Its totient is φ = 848655360.

The previous prime is 860585207. The next prime is 860585293. The reversal of 860585261 is 162585068.

It can be written as a sum of positive squares in 4 ways, for example, as 147161161 + 713424100 = 12131^2 + 26710^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 860585261 - 2⁶ = 860585197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860545261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11471 + ... + 43043.

It is an arithmetic number, because the mean of its divisors is an integer number (109072383).

Almost surely, 2^860585261 is an apocalyptic number.

It is an amenable number.

860585261 is a deficient number, since it is larger than the sum of its proper divisors (11993803).

860585261 is a wasteful number, since it uses less digits than its factorization.

860585261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31951.

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 860585261 is about 29335.7335173334. The cubic root of 860585261 is about 951.1842151791.

It can be divided in two parts, 86058 and 5261, that added together give a palindrome (91319).

The spelling of 860585261 in words is "eight hundred sixty million, five hundred eighty-five thousand, two hundred sixty-one".