8321197 has 4 divisors (see below), whose sum is σ = 8435260. Its totient is φ = 8207136.

The previous prime is 8321171. The next prime is 8321213. The reversal of 8321197 is 7911238.

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 6522916 + 1798281 = 2554^2 + 1341^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8321197 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 (8321897) 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, 56922 + ... + 57067.

It is an arithmetic number, because the mean of its divisors is an integer number (2108815).

Almost surely, 2^8321197 is an apocalyptic number.

It is an amenable number.

8321197 is a deficient number, since it is larger than the sum of its proper divisors (114063).

8321197 is a wasteful number, since it uses less digits than its factorization.

8321197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114062.

The product of its digits is 3024, while the sum is 31.

The square root of 8321197 is about 2884.6485054509. The cubic root of 8321197 is about 202.6415978606.

The spelling of 8321197 in words is "eight million, three hundred twenty-one thousand, one hundred ninety-seven".