863265 has 32 divisors (see below), whose sum is σ = 1572480. Its totient is φ = 400896.

The previous prime is 863251. The next prime is 863279. The reversal of 863265 is 562368.

It is an interprime number because it is at equal distance from previous prime (863251) and next prime (863279).

It is not a de Polignac number, because 863265 - 2¹⁰ = 862241 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3589 + ... + 3821.

It is an arithmetic number, because the mean of its divisors is an integer number (49140).

2⁸⁶³²⁶⁵ is an apocalyptic number.

It is an amenable number.

863265 is a deficient number, since it is larger than the sum of its proper divisors (709215).

863265 is a wasteful number, since it uses less digits than its factorization.

863265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273.

The product of its digits is 8640, while the sum is 30.

The square root of 863265 is about 929.1205519199. The cubic root of 863265 is about 95.2170475909.

It can be divided in two parts, 863 and 265, that added together give a triangular number (1128 = T₄₇).

The spelling of 863265 in words is "eight hundred sixty-three thousand, two hundred sixty-five".