859830681 has 4 divisors (see below), whose sum is σ = 1146440912. Its totient is φ = 573220452.

The previous prime is 859830667. The next prime is 859830701. The reversal of 859830681 is 186038958.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 859830681 - 2⁷ = 859830553 is a prime.

It is a super-2 number, since 2×859830681² = 1478617599977847522, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 859830681.

It is not an unprimeable number, because it can be changed into a prime (859830581) 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, 143305111 + ... + 143305116.

It is an arithmetic number, because the mean of its divisors is an integer number (286610228).

Almost surely, 2^859830681 is an apocalyptic number.

It is an amenable number.

859830681 is a deficient number, since it is larger than the sum of its proper divisors (286610231).

859830681 is a wasteful number, since it uses less digits than its factorization.

859830681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286610230.

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 859830681 is about 29322.8695901339. The cubic root of 859830681 is about 950.9061275032.

The spelling of 859830681 in words is "eight hundred fifty-nine million, eight hundred thirty thousand, six hundred eighty-one".