864577197 has 48 divisors (see below), whose sum is σ = 1480427520. Its totient is φ = 480362400.

The previous prime is 864577163. The next prime is 864577213. The reversal of 864577197 is 791775468.

864577197 is a `hidden beast` number, since 8 + 64 + 577 + 1 + 9 + 7 = 666.

864577197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-864577197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864577117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50898 + ... + 65724.

It is an arithmetic number, because the mean of its divisors is an integer number (30842240).

Almost surely, 2^864577197 is an apocalyptic number.

It is an amenable number.

864577197 is a deficient number, since it is larger than the sum of its proper divisors (615850323).

864577197 is a wasteful number, since it uses less digits than its factorization.

864577197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14894 (or 14891 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 54.

The square root of 864577197 is about 29403.6935945129. The cubic root of 864577197 is about 952.6526772846.

The spelling of 864577197 in words is "eight hundred sixty-four million, five hundred seventy-seven thousand, one hundred ninety-seven".