13649297 has 2 divisors, whose sum is σ = 13649298. Its totient is φ = 13649296.

The previous prime is 13649261. The next prime is 13649303. The reversal of 13649297 is 79294631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13476241 + 173056 = 3671^2 + 416^2 .

It is a cyclic number.

It is not a de Polignac number, because 13649297 - 2¹⁰ = 13648273 is a prime.

It is a super-3 number, since 3×13649297³ (a number of 22 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13649197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6824648 + 6824649.

It is an arithmetic number, because the mean of its divisors is an integer number (6824649).

Almost surely, 2^13649297 is an apocalyptic number.

It is an amenable number.

13649297 is a deficient number, since it is larger than the sum of its proper divisors (1).

13649297 is an equidigital number, since it uses as much as digits as its factorization.

13649297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 13649297 is about 3694.4955000649. The cubic root of 13649297 is about 238.9846981678.

The spelling of 13649297 in words is "thirteen million, six hundred forty-nine thousand, two hundred ninety-seven".