864197898 has 16 divisors (see below), whose sum is σ = 1757691360. Its totient is φ = 283183376.

The previous prime is 864197857. The next prime is 864197899. The reversal of 864197898 is 898791468.

It is not an unprimeable number, because it can be changed into a prime (864197899) 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, 1220265 + ... + 1220972.

It is an arithmetic number, because the mean of its divisors is an integer number (109855710).

Almost surely, 2^864197898 is an apocalyptic number.

864197898 is an abundant number, since it is smaller than the sum of its proper divisors (893493462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864197898 is a wasteful number, since it uses less digits than its factorization.

864197898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441301.

The product of its digits is 6967296, while the sum is 60.

The square root of 864197898 is about 29397.2430339990. The cubic root of 864197898 is about 952.5133440309.

The spelling of 864197898 in words is "eight hundred sixty-four million, one hundred ninety-seven thousand, eight hundred ninety-eight".