13609691 has 2 divisors, whose sum is σ = 13609692. Its totient is φ = 13609690.

The previous prime is 13609669. The next prime is 13609697. The reversal of 13609691 is 19690631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13609691 - 2⁶ = 13609627 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13609697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6804845 + 6804846.

It is an arithmetic number, because the mean of its divisors is an integer number (6804846).

Almost surely, 2^13609691 is an apocalyptic number.

13609691 is a deficient number, since it is larger than the sum of its proper divisors (1).

13609691 is an equidigital number, since it uses as much as digits as its factorization.

13609691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 13609691 is about 3689.1314696009. The cubic root of 13609691 is about 238.7533212261.

The spelling of 13609691 in words is "thirteen million, six hundred nine thousand, six hundred ninety-one".