8117797 has 4 divisors (see below), whose sum is σ = 8123500. Its totient is φ = 8112096.

The previous prime is 8117783. The next prime is 8117831. The reversal of 8117797 is 7977118.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 3682561 + 4435236 = 1919^2 + 2106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8117797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8117717) 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, 1273 + ... + 4225.

It is an arithmetic number, because the mean of its divisors is an integer number (2030875).

Almost surely, 2^8117797 is an apocalyptic number.

It is an amenable number.

8117797 is a deficient number, since it is larger than the sum of its proper divisors (5703).

8117797 is a wasteful number, since it uses less digits than its factorization.

8117797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5702.

The product of its digits is 24696, while the sum is 40.

The square root of 8117797 is about 2849.1747928128. The cubic root of 8117797 is about 200.9768625958.

The spelling of 8117797 in words is "eight million, one hundred seventeen thousand, seven hundred ninety-seven".