868488197 has 8 divisors (see below), whose sum is σ = 920727000. Its totient is φ = 816377344.

The previous prime is 868488191. The next prime is 868488209. The reversal of 868488197 is 791884868.

It can be written as a sum of positive squares in 4 ways, for example, as 300190276 + 568297921 = 17326^2 + 23839^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 868488197 - 2⁸ = 868487941 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 (868488191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17822 + ... + 45327.

It is an arithmetic number, because the mean of its divisors is an integer number (115090875).

Almost surely, 2^868488197 is an apocalyptic number.

It is an amenable number.

868488197 is a deficient number, since it is larger than the sum of its proper divisors (52238803).

868488197 is a wasteful number, since it uses less digits than its factorization.

868488197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63975.

The product of its digits is 6193152, while the sum is 59.

The square root of 868488197 is about 29470.1238036083. The cubic root of 868488197 is about 954.0869894029.

The spelling of 868488197 in words is "eight hundred sixty-eight million, four hundred eighty-eight thousand, one hundred ninety-seven".