12918765 has 16 divisors (see below), whose sum is σ = 21758400. Its totient is φ = 6527232.

The previous prime is 12918761. The next prime is 12918769. The reversal of 12918765 is 56781921.

It is an interprime number because it is at equal distance from previous prime (12918761) and next prime (12918769).

It is not a de Polignac number, because 12918765 - 2² = 12918761 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12918761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22380 + ... + 22949.

It is an arithmetic number, because the mean of its divisors is an integer number (1359900).

Almost surely, 2^12918765 is an apocalyptic number.

12918765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12918765 is a deficient number, since it is larger than the sum of its proper divisors (8839635).

12918765 is a wasteful number, since it uses less digits than its factorization.

12918765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45356.

The product of its digits is 30240, while the sum is 39.

The square root of 12918765 is about 3594.2683539213. The cubic root of 12918765 is about 234.6426740905.

The spelling of 12918765 in words is "twelve million, nine hundred eighteen thousand, seven hundred sixty-five".