12810965 has 8 divisors (see below), whose sum is σ = 15634080. Its totient is φ = 10074832.

The previous prime is 12810961. The next prime is 12810971. The reversal of 12810965 is 56901821.

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 12810965 - 2² = 12810961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12810961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21419 + ... + 22008.

It is an arithmetic number, because the mean of its divisors is an integer number (1954260).

Almost surely, 2^12810965 is an apocalyptic number.

It is an amenable number.

12810965 is a deficient number, since it is larger than the sum of its proper divisors (2823115).

12810965 is an equidigital number, since it uses as much as digits as its factorization.

12810965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43491.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 12810965 is about 3579.2408412958. The cubic root of 12810965 is about 233.9881955231.

The spelling of 12810965 in words is "twelve million, eight hundred ten thousand, nine hundred sixty-five".