13645001 has 2 divisors, whose sum is σ = 13645002. Its totient is φ = 13645000.

The previous prime is 13644997. The next prime is 13645013. The reversal of 13645001 is 10054631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10758400 + 2886601 = 3280^2 + 1699^2 .

It is an emirp because it is prime and its reverse (10054631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13645001 - 2² = 13644997 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13642001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6822500 + 6822501.

It is an arithmetic number, because the mean of its divisors is an integer number (6822501).

Almost surely, 2^13645001 is an apocalyptic number.

It is an amenable number.

13645001 is a deficient number, since it is larger than the sum of its proper divisors (1).

13645001 is an equidigital number, since it uses as much as digits as its factorization.

13645001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 13645001 is about 3693.9140488106. The cubic root of 13645001 is about 238.9596227373.

Adding to 13645001 its reverse (10054631), we get a palindrome (23699632).

The spelling of 13645001 in words is "thirteen million, six hundred forty-five thousand, one".