816265 has 8 divisors (see below), whose sum is σ = 996480. Its totient is φ = 641712.

The previous prime is 816251. The next prime is 816271. The reversal of 816265 is 562618.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-816265 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1089 + ... + 1678.

It is an arithmetic number, because the mean of its divisors is an integer number (124560).

2⁸¹⁶²⁶⁵ is an apocalyptic number.

It is an amenable number.

816265 is a deficient number, since it is larger than the sum of its proper divisors (180215).

816265 is a wasteful number, since it uses less digits than its factorization.

816265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2831.

The product of its digits is 2880, while the sum is 28.

The square root of 816265 is about 903.4738513095. The cubic root of 816265 is about 93.4566892166.

It can be divided in two parts, 816 and 265, that added together give a triangular number (1081 = T₄₆).

The spelling of 816265 in words is "eight hundred sixteen thousand, two hundred sixty-five".