864806143 has 8 divisors (see below), whose sum is σ = 894067040. Its totient is φ = 835855200.

The previous prime is 864806123. The next prime is 864806149. The reversal of 864806143 is 341608468.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864806143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 864806096 and 864806105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864806149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71808 + ... + 82981.

It is an arithmetic number, because the mean of its divisors is an integer number (111758380).

Almost surely, 2^864806143 is an apocalyptic number.

864806143 is a deficient number, since it is larger than the sum of its proper divisors (29260897).

864806143 is a wasteful number, since it uses less digits than its factorization.

864806143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154977.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 864806143 is about 29407.5864871635. The cubic root of 864806143 is about 952.7367595279.

The spelling of 864806143 in words is "eight hundred sixty-four million, eight hundred six thousand, one hundred forty-three".