13605601 has 2 divisors, whose sum is σ = 13605602. Its totient is φ = 13605600.

The previous prime is 13605551. The next prime is 13605619. The reversal of 13605601 is 10650631.

13605601 is nontrivially palindromic in base 7.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7845601 + 5760000 = 2801^2 + 2400^2 .

It is a cyclic number.

It is not a de Polignac number, because 13605601 - 2¹⁵ = 13572833 is a prime.

It is a super-2 number, since 2×13605601² = 370224757142402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13605671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6802800 + 6802801.

It is an arithmetic number, because the mean of its divisors is an integer number (6802801).

Almost surely, 2^13605601 is an apocalyptic number.

It is an amenable number.

13605601 is a deficient number, since it is larger than the sum of its proper divisors (1).

13605601 is an equidigital number, since it uses as much as digits as its factorization.

13605601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 13605601 is about 3688.5770969305. The cubic root of 13605601 is about 238.7294020222.

The spelling of 13605601 in words is "thirteen million, six hundred five thousand, six hundred one".