865485460 has 24 divisors (see below), whose sum is σ = 2077165440. Its totient is φ = 296737824.

The previous prime is 865485451. The next prime is 865485479. The reversal of 865485460 is 64584568.

It is a self number, because there is not a number n which added to its sum of digits gives 865485460.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3090880 + ... + 3091159.

It is an arithmetic number, because the mean of its divisors is an integer number (86548560).

Almost surely, 2^865485460 is an apocalyptic number.

It is an amenable number.

865485460 is an abundant number, since it is smaller than the sum of its proper divisors (1211679980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

865485460 is a wasteful number, since it uses less digits than its factorization.

865485460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6182055 (or 6182053 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 46.

The square root of 865485460 is about 29419.1342496682. The cubic root of 865485460 is about 952.9861568032.

The spelling of 865485460 in words is "eight hundred sixty-five million, four hundred eighty-five thousand, four hundred sixty".