864353878 has 8 divisors (see below), whose sum is σ = 1297443672. Its totient is φ = 431872656.

The previous prime is 864353863. The next prime is 864353881. The reversal of 864353878 is 878353468.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148575 + ... + 154282.

It is an arithmetic number, because the mean of its divisors is an integer number (162180459).

Almost surely, 2^864353878 is an apocalyptic number.

864353878 is a deficient number, since it is larger than the sum of its proper divisors (433089794).

864353878 is a wasteful number, since it uses less digits than its factorization.

864353878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304286.

The product of its digits is 3870720, while the sum is 52.

The square root of 864353878 is about 29399.8958841694. The cubic root of 864353878 is about 952.5706472998.

The spelling of 864353878 in words is "eight hundred sixty-four million, three hundred fifty-three thousand, eight hundred seventy-eight".