12669655 has 16 divisors (see below), whose sum is σ = 15551424. Its totient is φ = 9907200.

The previous prime is 12669653. The next prime is 12669659. The reversal of 12669655 is 55696621.

12669655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12669655 - 2¹ = 12669653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12669653) 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, 73149 + ... + 73321.

It is an arithmetic number, because the mean of its divisors is an integer number (971964).

Almost surely, 2^12669655 is an apocalyptic number.

12669655 is a deficient number, since it is larger than the sum of its proper divisors (2881769).

12669655 is a wasteful number, since it uses less digits than its factorization.

12669655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426.

The product of its digits is 97200, while the sum is 40.

The square root of 12669655 is about 3559.4458838420. The cubic root of 12669655 is about 233.1246853635.

The spelling of 12669655 in words is "twelve million, six hundred sixty-nine thousand, six hundred fifty-five".