8197685 has 8 divisors (see below), whose sum is σ = 9854136. Its totient is φ = 6546880.

The previous prime is 8197627. The next prime is 8197687. The reversal of 8197685 is 5867918.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 97969 + 8099716 = 313^2 + 2846^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8197685 - 2⁸ = 8197429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8197687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3107 + ... + 5103.

It is an arithmetic number, because the mean of its divisors is an integer number (1231767).

Almost surely, 2^8197685 is an apocalyptic number.

It is an amenable number.

8197685 is a deficient number, since it is larger than the sum of its proper divisors (1656451).

8197685 is a wasteful number, since it uses less digits than its factorization.

8197685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823.

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

The square root of 8197685 is about 2863.1599675883. The cubic root of 8197685 is about 201.6339890439.

The spelling of 8197685 in words is "eight million, one hundred ninety-seven thousand, six hundred eighty-five".