8197897 has 4 divisors (see below), whose sum is σ = 8203780. Its totient is φ = 8192016.

The previous prime is 8197837. The next prime is 8197901. The reversal of 8197897 is 7987918.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7987918 = 2 ⋅3993959.

It can be written as a sum of positive squares in 2 ways, for example, as 109561 + 8088336 = 331^2 + 2844^2 .

It is a cyclic number.

It is not a de Polignac number, because 8197897 - 2¹¹ = 8195849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8197897.

It is not an unprimeable number, because it can be changed into a prime (8197817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463 + ... + 4075.

It is an arithmetic number, because the mean of its divisors is an integer number (2050945).

Almost surely, 2^8197897 is an apocalyptic number.

It is an amenable number.

8197897 is a deficient number, since it is larger than the sum of its proper divisors (5883).

8197897 is a wasteful number, since it uses less digits than its factorization.

8197897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5882.

The product of its digits is 254016, while the sum is 49.

The square root of 8197897 is about 2863.1969893809. The cubic root of 8197897 is about 201.6357271783.

The spelling of 8197897 in words is "eight million, one hundred ninety-seven thousand, eight hundred ninety-seven".