36811 has 4 divisors (see below), whose sum is σ = 37224. Its totient is φ = 36400.

The previous prime is 36809. The next prime is 36821. The reversal of 36811 is 11863.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 36811 - 2¹ = 36809 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (36821) 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, 10 + ... + 271.

It is an arithmetic number, because the mean of its divisors is an integer number (9306).

2³⁶⁸¹¹ is an apocalyptic number.

36811 is a deficient number, since it is larger than the sum of its proper divisors (413).

36811 is a wasteful number, since it uses less digits than its factorization.

36811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412.

The product of its digits is 144, while the sum is 19.

The square root of 36811 is about 191.8619295222. The cubic root of 36811 is about 33.2653838022.

The spelling of 36811 in words is "thirty-six thousand, eight hundred eleven".