12669915 has 16 divisors (see below), whose sum is σ = 20655648. Its totient is φ = 6629376.

The previous prime is 12669893. The next prime is 12669929. The reversal of 12669915 is 51996621.

It is not a de Polignac number, because 12669915 - 2⁶ = 12669851 is a prime.

It is a super-2 number, since 2×12669915² = 321053492214450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7174 + ... + 8763.

It is an arithmetic number, because the mean of its divisors is an integer number (1290978).

Almost surely, 2^12669915 is an apocalyptic number.

12669915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12669915 is a deficient number, since it is larger than the sum of its proper divisors (7985733).

12669915 is a wasteful number, since it uses less digits than its factorization.

12669915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15998.

The product of its digits is 29160, while the sum is 39.

The square root of 12669915 is about 3559.4824061933. The cubic root of 12669915 is about 233.1262800400.

The spelling of 12669915 in words is "twelve million, six hundred sixty-nine thousand, nine hundred fifteen".