13666677 has 4 divisors (see below), whose sum is σ = 18222240. Its totient is φ = 9111116.

The previous prime is 13666673. The next prime is 13666687. The reversal of 13666677 is 77666631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13666677 - 2² = 13666673 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13666673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2277777 + ... + 2277782.

It is an arithmetic number, because the mean of its divisors is an integer number (4555560).

Almost surely, 2^13666677 is an apocalyptic number.

It is an amenable number.

13666677 is a deficient number, since it is larger than the sum of its proper divisors (4555563).

13666677 is an equidigital number, since it uses as much as digits as its factorization.

13666677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4555562.

The product of its digits is 190512, while the sum is 42.

The square root of 13666677 is about 3696.8468997241. The cubic root of 13666677 is about 239.0860902604.

The spelling of 13666677 in words is "thirteen million, six hundred sixty-six thousand, six hundred seventy-seven".