12965915 has 4 divisors (see below), whose sum is σ = 15559104. Its totient is φ = 10372728.

The previous prime is 12965879. The next prime is 12965921. The reversal of 12965915 is 51956921.

12965915 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12965915 - 2⁶ = 12965851 is a prime.

It is a super-2 number, since 2×12965915² = 336229903574450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1296587 + ... + 1296596.

It is an arithmetic number, because the mean of its divisors is an integer number (3889776).

Almost surely, 2^12965915 is an apocalyptic number.

12965915 is a deficient number, since it is larger than the sum of its proper divisors (2593189).

12965915 is an equidigital number, since it uses as much as digits as its factorization.

12965915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593188.

The product of its digits is 24300, while the sum is 38.

The square root of 12965915 is about 3600.8214340620. The cubic root of 12965915 is about 234.9277882851.

The spelling of 12965915 in words is "twelve million, nine hundred sixty-five thousand, nine hundred fifteen".