12661677 has 40 divisors (see below), whose sum is σ = 21907776. Its totient is φ = 7138368.

The previous prime is 12661669. The next prime is 12661679. The reversal of 12661677 is 77616621.

12661677 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12661677 - 2³ = 12661669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12661679) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 77598 + ... + 77760.

Almost surely, 2^12661677 is an apocalyptic number.

It is an amenable number.

12661677 is a deficient number, since it is larger than the sum of its proper divisors (9246099).

12661677 is a wasteful number, since it uses less digits than its factorization.

12661677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 310 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 12661677 is about 3558.3250273127. The cubic root of 12661677 is about 233.0757427191.

The spelling of 12661677 in words is "twelve million, six hundred sixty-one thousand, six hundred seventy-seven".