12658965 has 32 divisors (see below), whose sum is σ = 23400576. Its totient is φ = 5775360.

The previous prime is 12658957. The next prime is 12658967. The reversal of 12658965 is 56985621.

It is not a de Polignac number, because 12658965 - 2³ = 12658957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12658967) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 549 + ... + 5061.

It is an arithmetic number, because the mean of its divisors is an integer number (731268).

Almost surely, 2^12658965 is an apocalyptic number.

12658965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12658965 is a deficient number, since it is larger than the sum of its proper divisors (10741611).

12658965 is a wasteful number, since it uses less digits than its factorization.

12658965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549.

The product of its digits is 129600, while the sum is 42.

The square root of 12658965 is about 3557.9439287319. The cubic root of 12658965 is about 233.0591007280.

The spelling of 12658965 in words is "twelve million, six hundred fifty-eight thousand, nine hundred sixty-five".