865655492 has 12 divisors (see below), whose sum is σ = 1631427756. Its totient is φ = 399533280.

The previous prime is 865655491. The next prime is 865655537. The reversal of 865655492 is 294556568.

865655492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 278756416 + 586899076 = 16696^2 + 24226^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 865655492.

It is not an unprimeable number, because it can be changed into a prime (865655491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8323559 + ... + 8323662.

It is an arithmetic number, because the mean of its divisors is an integer number (135952313).

Almost surely, 2^865655492 is an apocalyptic number.

It is an amenable number.

865655492 is a deficient number, since it is larger than the sum of its proper divisors (765772264).

865655492 is a wasteful number, since it uses less digits than its factorization.

865655492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16647238 (or 16647236 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 50.

The square root of 865655492 is about 29422.0239276634. The cubic root of 865655492 is about 953.0485601362.

The spelling of 865655492 in words is "eight hundred sixty-five million, six hundred fifty-five thousand, four hundred ninety-two".