13766641 has 4 divisors (see below), whose sum is σ = 15733312. Its totient is φ = 11799972.

The previous prime is 13766593. The next prime is 13766657. The reversal of 13766641 is 14666731.

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 13766641 - 2¹¹ = 13764593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13766597 and 13766606.

It is not an unprimeable number, because it can be changed into a prime (13766681) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 983325 + ... + 983338.

It is an arithmetic number, because the mean of its divisors is an integer number (3933328).

Almost surely, 2^13766641 is an apocalyptic number.

It is an amenable number.

13766641 is a deficient number, since it is larger than the sum of its proper divisors (1966671).

13766641 is an equidigital number, since it uses as much as digits as its factorization.

13766641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966670.

The product of its digits is 18144, while the sum is 34.

The square root of 13766641 is about 3710.3424370265. The cubic root of 13766641 is about 239.6676011844.

The spelling of 13766641 in words is "thirteen million, seven hundred sixty-six thousand, six hundred forty-one".