13640201 has 2 divisors, whose sum is σ = 13640202. Its totient is φ = 13640200.

The previous prime is 13640189. The next prime is 13640213. The reversal of 13640201 is 10204631.

It is a balanced prime because it is at equal distance from previous prime (13640189) and next prime (13640213).

It can be written as a sum of positive squares in only one way, i.e., 10086976 + 3553225 = 3176^2 + 1885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13640201 is a prime.

It is a Chen prime.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 13640201.

It is not a weakly prime, because it can be changed into another prime (13640261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6820100 + 6820101.

It is an arithmetic number, because the mean of its divisors is an integer number (6820101).

Almost surely, 2^13640201 is an apocalyptic number.

It is an amenable number.

13640201 is a deficient number, since it is larger than the sum of its proper divisors (1).

13640201 is an equidigital number, since it uses as much as digits as its factorization.

13640201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 13640201 is about 3693.2642743243. The cubic root of 13640201 is about 238.9315992701.

Adding to 13640201 its reverse (10204631), we get a palindrome (23844832).

The spelling of 13640201 in words is "thirteen million, six hundred forty thousand, two hundred one".