8196857 has 4 divisors (see below), whose sum is σ = 8278116. Its totient is φ = 8115600.

The previous prime is 8196833. The next prime is 8196883. The reversal of 8196857 is 7586918.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5812921 + 2383936 = 2411^2 + 1544^2 .

It is a cyclic number.

It is not a de Polignac number, because 8196857 - 2²² = 4002553 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 (8196817) 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, 40478 + ... + 40679.

It is an arithmetic number, because the mean of its divisors is an integer number (2069529).

Almost surely, 2^8196857 is an apocalyptic number.

It is an amenable number.

8196857 is a deficient number, since it is larger than the sum of its proper divisors (81259).

8196857 is a wasteful number, since it uses less digits than its factorization.

8196857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81258.

The product of its digits is 120960, while the sum is 44.

The square root of 8196857 is about 2863.0153684533. The cubic root of 8196857 is about 201.6272001937.

The spelling of 8196857 in words is "eight million, one hundred ninety-six thousand, eight hundred fifty-seven".