64858863 has 4 divisors (see below), whose sum is σ = 86478488. Its totient is φ = 43239240.

The previous prime is 64858861. The next prime is 64858883. The reversal of 64858863 is 36885846.

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

It is not a de Polignac number, because 64858863 - 2¹ = 64858861 is a prime.

It is the 8054-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64858861) by changing a digit.

It is a nontrivial repunit in base 8053.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10809808 + ... + 10809813.

It is an arithmetic number, because the mean of its divisors is an integer number (21619622).

Almost surely, 2^64858863 is an apocalyptic number.

64858863 is a deficient number, since it is larger than the sum of its proper divisors (21619625).

64858863 is a wasteful number, since it uses less digits than its factorization.

64858863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21619624.

The product of its digits is 1105920, while the sum is 48.

The square root of 64858863 is about 8053.5000465636. The cubic root of 64858863 is about 401.7813530933.

The spelling of 64858863 in words is "sixty-four million, eight hundred fifty-eight thousand, eight hundred sixty-three".