13662791 has 2 divisors, whose sum is σ = 13662792. Its totient is φ = 13662790.

The previous prime is 13662769. The next prime is 13662797. The reversal of 13662791 is 19726631.

13662791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (19726631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13662791 - 2¹⁴ = 13646407 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13662797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6831395 + 6831396.

It is an arithmetic number, because the mean of its divisors is an integer number (6831396).

Almost surely, 2^13662791 is an apocalyptic number.

13662791 is a deficient number, since it is larger than the sum of its proper divisors (1).

13662791 is an equidigital number, since it uses as much as digits as its factorization.

13662791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 35.

The square root of 13662791 is about 3696.3212793262. The cubic root of 13662791 is about 239.0634274331.

The spelling of 13662791 in words is "thirteen million, six hundred sixty-two thousand, seven hundred ninety-one".