12646965 has 8 divisors (see below), whose sum is σ = 20235168. Its totient is φ = 6745040.

The previous prime is 12646961. The next prime is 12646969. The reversal of 12646965 is 56964621.

12646965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12646961) and next prime (12646969).

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

It is not a de Polignac number, because 12646965 - 2² = 12646961 is a prime.

It is a super-2 number, since 2×12646965² = 319891447422450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12646961) 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, 421551 + ... + 421580.

It is an arithmetic number, because the mean of its divisors is an integer number (2529396).

Almost surely, 2^12646965 is an apocalyptic number.

12646965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12646965 is a deficient number, since it is larger than the sum of its proper divisors (7588203).

12646965 is an equidigital number, since it uses as much as digits as its factorization.

12646965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843139.

The product of its digits is 77760, while the sum is 39.

The square root of 12646965 is about 3556.2571616800. The cubic root of 12646965 is about 232.9854350588.

The spelling of 12646965 in words is "twelve million, six hundred forty-six thousand, nine hundred sixty-five".