861336 has 48 divisors (see below), whose sum is σ = 2667600. Its totient is φ = 245952.

The previous prime is 861317. The next prime is 861347. The reversal of 861336 is 633168.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

861336 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 351 + ... + 1358.

It is an arithmetic number, because the mean of its divisors is an integer number (55575).

2⁸⁶¹³³⁶ is an apocalyptic number.

It is an amenable number.

861336 is an abundant number, since it is smaller than the sum of its proper divisors (1806264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

861336 is a wasteful number, since it uses less digits than its factorization.

861336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728 (or 1721 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 861336 is about 928.0818929383. The cubic root of 861336 is about 95.1460726050.

It can be divided in two parts, 8613 and 36, that added together give a square (8649 = 93²).

The spelling of 861336 in words is "eight hundred sixty-one thousand, three hundred thirty-six".