868536861 has 8 divisors (see below), whose sum is σ = 1165154400. Its totient is φ = 575471952.

The previous prime is 868536859. The next prime is 868536887. The reversal of 868536861 is 168635868.

868536861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 868536861 - 2¹ = 868536859 is a prime.

It is a super-3 number, since 3×868536861³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868536761) 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, 887586 + ... + 888563.

It is an arithmetic number, because the mean of its divisors is an integer number (145644300).

Almost surely, 2^868536861 is an apocalyptic number.

It is an amenable number.

868536861 is a deficient number, since it is larger than the sum of its proper divisors (296617539).

868536861 is a wasteful number, since it uses less digits than its factorization.

868536861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776315.

The product of its digits is 1658880, while the sum is 51.

The square root of 868536861 is about 29470.9494417808. The cubic root of 868536861 is about 954.1048091891.

The spelling of 868536861 in words is "eight hundred sixty-eight million, five hundred thirty-six thousand, eight hundred sixty-one".