8137897 has 2 divisors, whose sum is σ = 8137898. Its totient is φ = 8137896.

The previous prime is 8137889. The next prime is 8137919. The reversal of 8137897 is 7987318.

8137897 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7311616 + 826281 = 2704^2 + 909^2 .

It is a cyclic number.

It is not a de Polignac number, because 8137897 - 2³ = 8137889 is a prime.

It is not a weakly prime, because it can be changed into another prime (8137867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4068948 + 4068949.

It is an arithmetic number, because the mean of its divisors is an integer number (4068949).

Almost surely, 2^8137897 is an apocalyptic number.

It is an amenable number.

8137897 is a deficient number, since it is larger than the sum of its proper divisors (1).

8137897 is an equidigital number, since it uses as much as digits as its factorization.

8137897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 43.

The square root of 8137897 is about 2852.6999491710. The cubic root of 8137897 is about 201.1426015443.

The spelling of 8137897 in words is "eight million, one hundred thirty-seven thousand, eight hundred ninety-seven".