12315765 has 32 divisors (see below), whose sum is σ = 24569856. Its totient is φ = 5117760.

The previous prime is 12315727. The next prime is 12315811. The reversal of 12315765 is 56751321.

It is not a de Polignac number, because 12315765 - 2⁸ = 12315509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4177 + ... + 6486.

It is an arithmetic number, because the mean of its divisors is an integer number (767808).

Almost surely, 2^12315765 is an apocalyptic number.

12315765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12315765 is a deficient number, since it is larger than the sum of its proper divisors (12254091).

12315765 is a wasteful number, since it uses less digits than its factorization.

12315765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10689.

The product of its digits is 6300, while the sum is 30.

The square root of 12315765 is about 3509.3824243020. The cubic root of 12315765 is about 230.9336028507.

Subtracting 12315765 from its reverse (56751321), we obtain a square (44435556 = 6666²).

It can be divided in two parts, 1231 and 5765, that added together give a palindrome (6996).

The spelling of 12315765 in words is "twelve million, three hundred fifteen thousand, seven hundred sixty-five".