12815465 has 8 divisors (see below), whose sum is σ = 16561608. Its totient is φ = 9463680.

The previous prime is 12815447. The next prime is 12815471. The reversal of 12815465 is 56451821.

12815465 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3031081 + 9784384 = 1741^2 + 3128^2 .

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

It is not a de Polignac number, because 12815465 - 2¹² = 12811369 is a prime.

It is a super-2 number, since 2×12815465² = 328472286332450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98516 + ... + 98645.

It is an arithmetic number, because the mean of its divisors is an integer number (2070201).

Almost surely, 2^12815465 is an apocalyptic number.

It is an amenable number.

12815465 is a deficient number, since it is larger than the sum of its proper divisors (3746143).

12815465 is a wasteful number, since it uses less digits than its factorization.

12815465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197179.

The product of its digits is 9600, while the sum is 32.

The square root of 12815465 is about 3579.8694110261. The cubic root of 12815465 is about 234.0155893381.

The spelling of 12815465 in words is "twelve million, eight hundred fifteen thousand, four hundred sixty-five".