36881 has 4 divisors (see below), whose sum is σ = 39732. Its totient is φ = 34032.

The previous prime is 36877. The next prime is 36887. The reversal of 36881 is 18863.

36881 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18863 = 13 ⋅1451.

It can be written as a sum of positive squares in 2 ways, for example, as 3025 + 33856 = 55^2 + 184^2 .

It is a cyclic number.

It is not a de Polignac number, because 36881 - 2² = 36877 is a prime.

It is a super-2 number, since 2×36881² = 2720416322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 36881.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 36881.

It is not an unprimeable number, because it can be changed into a prime (36887) 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, 1406 + ... + 1431.

It is an arithmetic number, because the mean of its divisors is an integer number (9933).

2³⁶⁸⁸¹ is an apocalyptic number.

It is an amenable number.

36881 is a deficient number, since it is larger than the sum of its proper divisors (2851).

36881 is a wasteful number, since it uses less digits than its factorization.

36881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850.

The product of its digits is 1152, while the sum is 26.

The square root of 36881 is about 192.0442657306. The cubic root of 36881 is about 33.2864563295.

The spelling of 36881 in words is "thirty-six thousand, eight hundred eighty-one".