12775915 has 16 divisors (see below), whose sum is σ = 16054848. Its totient is φ = 9749376.

The previous prime is 12775913. The next prime is 12775943. The reversal of 12775915 is 51957721.

It is a cyclic number.

It is not a de Polignac number, because 12775915 - 2¹ = 12775913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12775913) 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, 9154 + ... + 10456.

It is an arithmetic number, because the mean of its divisors is an integer number (1003428).

Almost surely, 2^12775915 is an apocalyptic number.

12775915 is a deficient number, since it is larger than the sum of its proper divisors (3278933).

12775915 is a wasteful number, since it uses less digits than its factorization.

12775915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398.

The product of its digits is 22050, while the sum is 37.

The square root of 12775915 is about 3574.3411980392. The cubic root of 12775915 is about 233.7746082550.

The spelling of 12775915 in words is "twelve million, seven hundred seventy-five thousand, nine hundred fifteen".