864197862 has 64 divisors (see below), whose sum is σ = 1992867840. Its totient is φ = 247082400.

The previous prime is 864197857. The next prime is 864197899. The reversal of 864197862 is 268791468.

864197862 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 338563 + ... + 341105.

It is an arithmetic number, because the mean of its divisors is an integer number (31138560).

Almost surely, 2^864197862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 864197862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (996433920).

864197862 is an abundant number, since it is smaller than the sum of its proper divisors (1128669978).

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

864197862 is a wasteful number, since it uses less digits than its factorization.

864197862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849.

The product of its digits is 1161216, while the sum is 51.

The square root of 864197862 is about 29397.2424216966. The cubic root of 864197862 is about 952.5133308045.

The spelling of 864197862 in words is "eight hundred sixty-four million, one hundred ninety-seven thousand, eight hundred sixty-two".