12915765 has 24 divisors (see below), whose sum is σ = 23362560. Its totient is φ = 6588384.

The previous prime is 12915757. The next prime is 12915803. The reversal of 12915765 is 56751921.

It is not a de Polignac number, because 12915765 - 2³ = 12915757 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5205 + ... + 7274.

It is an arithmetic number, because the mean of its divisors is an integer number (973440).

Almost surely, 2^12915765 is an apocalyptic number.

12915765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12915765 is a deficient number, since it is larger than the sum of its proper divisors (10446795).

12915765 is a wasteful number, since it uses less digits than its factorization.

12915765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12513 (or 12510 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 12915765 is about 3593.8509985808. The cubic root of 12915765 is about 234.6245097506.

It can be divided in two parts, 1291 and 5765, that added together give a square (7056 = 84²).

The spelling of 12915765 in words is "twelve million, nine hundred fifteen thousand, seven hundred sixty-five".