13287697 has 2 divisors, whose sum is σ = 13287698. Its totient is φ = 13287696.

The previous prime is 13287643. The next prime is 13287737. The reversal of 13287697 is 79678231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6739216 + 6548481 = 2596^2 + 2559^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13287697 is a prime.

It is not a weakly prime, because it can be changed into another prime (13287607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6643848 + 6643849.

It is an arithmetic number, because the mean of its divisors is an integer number (6643849).

Almost surely, 2^13287697 is an apocalyptic number.

It is an amenable number.

13287697 is a deficient number, since it is larger than the sum of its proper divisors (1).

13287697 is an equidigital number, since it uses as much as digits as its factorization.

13287697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 13287697 is about 3645.2293480658. The cubic root of 13287697 is about 236.8553717698.

It can be divided in two parts, 1328 and 7697, that added together give a square (9025 = 95²).

The spelling of 13287697 in words is "thirteen million, two hundred eighty-seven thousand, six hundred ninety-seven".