13659641 has 2 divisors, whose sum is σ = 13659642. Its totient is φ = 13659640.

The previous prime is 13659629. The next prime is 13659647. The reversal of 13659641 is 14695631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13169641 + 490000 = 3629^2 + 700^2 .

It is a cyclic number.

It is not a de Polignac number, because 13659641 - 2¹⁸ = 13397497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13659647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6829820 + 6829821.

It is an arithmetic number, because the mean of its divisors is an integer number (6829821).

Almost surely, 2^13659641 is an apocalyptic number.

It is an amenable number.

13659641 is a deficient number, since it is larger than the sum of its proper divisors (1).

13659641 is an equidigital number, since it uses as much as digits as its factorization.

13659641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 35.

The square root of 13659641 is about 3695.8951554393. The cubic root of 13659641 is about 239.0450537427.

The spelling of 13659641 in words is "thirteen million, six hundred fifty-nine thousand, six hundred forty-one".