836381 has 18 divisors (see below), whose sum is σ = 1063962. Its totient is φ = 655200.

The previous prime is 836377. The next prime is 836387. The reversal of 836381 is 183638.

836381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 70756 + 765625 = 266^2 + 875^2 .

It is not a de Polignac number, because 836381 - 2² = 836377 is a prime.

It is a super-2 number, since 2×836381² = 1399066354322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 836381.

It is not an unprimeable number, because it can be changed into a prime (836387) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8231 + ... + 8331.

It is an arithmetic number, because the mean of its divisors is an integer number (59109).

2⁸³⁶³⁸¹ is an apocalyptic number.

It is an amenable number.

836381 is a deficient number, since it is larger than the sum of its proper divisors (227581).

836381 is a wasteful number, since it uses less digits than its factorization.

836381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 121 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 836381 is about 914.5386815220. The cubic root of 836381 is about 94.2181818875.

The spelling of 836381 in words is "eight hundred thirty-six thousand, three hundred eighty-one".