864858311 has 4 divisors (see below), whose sum is σ = 877766712. Its totient is φ = 851949912.

The previous prime is 864858307. The next prime is 864858331. The reversal of 864858311 is 113858468.

It is a happy number.

864858311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 864858311 - 2² = 864858307 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 (864858331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6454100 + ... + 6454233.

It is an arithmetic number, because the mean of its divisors is an integer number (219441678).

Almost surely, 2^864858311 is an apocalyptic number.

864858311 is a deficient number, since it is larger than the sum of its proper divisors (12908401).

864858311 is a wasteful number, since it uses less digits than its factorization.

864858311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12908400.

The product of its digits is 184320, while the sum is 44.

The square root of 864858311 is about 29408.4734557916. The cubic root of 864858311 is about 952.7559165657.

The spelling of 864858311 in words is "eight hundred sixty-four million, eight hundred fifty-eight thousand, three hundred eleven".