12815365 has 8 divisors (see below), whose sum is σ = 16283160. Its totient is φ = 9649152.

The previous prime is 12815353. The next prime is 12815417. The reversal of 12815365 is 56351821.

It can be written as a sum of positive squares in 4 ways, for example, as 6895876 + 5919489 = 2626^2 + 2433^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12815365 - 2⁷ = 12815237 is a prime.

It is a congruent number.

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, 75300 + ... + 75469.

It is an arithmetic number, because the mean of its divisors is an integer number (2035395).

Almost surely, 2^12815365 is an apocalyptic number.

It is an amenable number.

12815365 is a deficient number, since it is larger than the sum of its proper divisors (3467795).

12815365 is a wasteful number, since it uses less digits than its factorization.

12815365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150791.

The product of its digits is 7200, while the sum is 31.

The square root of 12815365 is about 3579.8554440089. The cubic root of 12815365 is about 234.0149806563.

The spelling of 12815365 in words is "twelve million, eight hundred fifteen thousand, three hundred sixty-five".