815323069 has 4 divisors (see below), whose sum is σ = 889443360. Its totient is φ = 741202780.

The previous prime is 815323063. The next prime is 815323073. The reversal of 815323069 is 960323518.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 815323069 - 2¹⁷ = 815191997 is a prime.

It is a super-2 number, since 2×815323069² = 1329503413687157522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815323063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37060129 + ... + 37060150.

It is an arithmetic number, because the mean of its divisors is an integer number (222360840).

Almost surely, 2^815323069 is an apocalyptic number.

It is an amenable number.

815323069 is a deficient number, since it is larger than the sum of its proper divisors (74120291).

815323069 is a wasteful number, since it uses less digits than its factorization.

815323069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74120290.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 815323069 is about 28553.8625933515. The cubic root of 815323069 is about 934.2072718831.

The spelling of 815323069 in words is "eight hundred fifteen million, three hundred twenty-three thousand, sixty-nine".