815065 has 16 divisors (see below), whose sum is σ = 1064448. Its totient is φ = 596736.

The previous prime is 815063. The next prime is 815123. The reversal of 815065 is 560518.

It is a cyclic number.

It is not a de Polignac number, because 815065 - 2¹ = 815063 is a prime.

It is a Duffinian number.

815065 is a lucky number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (815063) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3544 + ... + 3766.

It is an arithmetic number, because the mean of its divisors is an integer number (66528).

2⁸¹⁵⁰⁶⁵ is an apocalyptic number.

815065 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

815065 is a deficient number, since it is larger than the sum of its proper divisors (249383).

815065 is a wasteful number, since it uses less digits than its factorization.

815065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 815065 is about 902.8095037160. The cubic root of 815065 is about 93.4108695263.

The spelling of 815065 in words is "eight hundred fifteen thousand, sixty-five".