13649197 has 2 divisors, whose sum is σ = 13649198. Its totient is φ = 13649196.

The previous prime is 13649191. The next prime is 13649203. The reversal of 13649197 is 79194631.

It is a balanced prime because it is at equal distance from previous prime (13649191) and next prime (13649203).

It can be written as a sum of positive squares in only one way, i.e., 9572836 + 4076361 = 3094^2 + 2019^2 .

It is a cyclic number.

It is not a de Polignac number, because 13649197 - 2²³ = 5260589 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13649191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6824598 + 6824599.

It is an arithmetic number, because the mean of its divisors is an integer number (6824599).

Almost surely, 2^13649197 is an apocalyptic number.

It is an amenable number.

13649197 is a deficient number, since it is larger than the sum of its proper divisors (1).

13649197 is an equidigital number, since it uses as much as digits as its factorization.

13649197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 40.

The square root of 13649197 is about 3694.4819663926. The cubic root of 13649197 is about 238.9841145351.

The spelling of 13649197 in words is "thirteen million, six hundred forty-nine thousand, one hundred ninety-seven".