858006863 has 4 divisors (see below), whose sum is σ = 980579280. Its totient is φ = 735434448.

The previous prime is 858006839. The next prime is 858006899. The reversal of 858006863 is 368600858.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368600858 = 2 ⋅184300429.

It is not a de Polignac number, because 858006863 - 2¹⁶ = 857941327 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 (858006833) 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, 61286198 + ... + 61286211.

It is an arithmetic number, because the mean of its divisors is an integer number (245144820).

Almost surely, 2^858006863 is an apocalyptic number.

858006863 is a deficient number, since it is larger than the sum of its proper divisors (122572417).

858006863 is a wasteful number, since it uses less digits than its factorization.

858006863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122572416.

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 858006863 is about 29291.7541809978. The cubic root of 858006863 is about 950.2333177623.

The spelling of 858006863 in words is "eight hundred fifty-eight million, six thousand, eight hundred sixty-three".