36861 has 8 divisors (see below), whose sum is σ = 53664. Its totient is φ = 22320.

The previous prime is 36857. The next prime is 36871. The reversal of 36861 is 16863.

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

It is not a de Polignac number, because 36861 - 2² = 36857 is a prime.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 526 + ... + 591.

It is an arithmetic number, because the mean of its divisors is an integer number (6708).

2³⁶⁸⁶¹ is an apocalyptic number.

It is an amenable number.

36861 is a deficient number, since it is larger than the sum of its proper divisors (16803).

36861 is a wasteful number, since it uses less digits than its factorization.

36861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131.

The product of its digits is 864, while the sum is 24.

The square root of 36861 is about 191.9921873410. The cubic root of 36861 is about 33.2804383302.

The spelling of 36861 in words is "thirty-six thousand, eight hundred sixty-one".