865226 has 4 divisors (see below), whose sum is σ = 1297842. Its totient is φ = 432612.

The previous prime is 865217. The next prime is 865231. The reversal of 865226 is 622568.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 616225 + 249001 = 785^2 + 499^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 865226.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216305 + ... + 216308.

2⁸⁶⁵²²⁶ is an apocalyptic number.

865226 is a deficient number, since it is larger than the sum of its proper divisors (432616).

865226 is a wasteful number, since it uses less digits than its factorization.

865226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432615.

The product of its digits is 5760, while the sum is 29.

The square root of 865226 is about 930.1752523046. The cubic root of 865226 is about 95.2890916805.

The spelling of 865226 in words is "eight hundred sixty-five thousand, two hundred twenty-six".