73881 has 6 divisors (see below), whose sum is σ = 106730. Its totient is φ = 49248.

The previous prime is 73877. The next prime is 73883. The reversal of 73881 is 18837.

It can be written as a sum of positive squares in only one way, i.e., 46656 + 27225 = 216^2 + 165^2 .

It is not a de Polignac number, because 73881 - 2² = 73877 is a prime.

It is a super-2 number, since 2×73881² = 10916804322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4096 + ... + 4113.

2⁷³⁸⁸¹ is an apocalyptic number.

It is an amenable number.

73881 is a deficient number, since it is larger than the sum of its proper divisors (32849).

73881 is a wasteful number, since it uses less digits than its factorization.

73881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8215 (or 8212 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 73881 is about 271.8105958200. The cubic root of 73881 is about 41.9608478677.

The spelling of 73881 in words is "seventy-three thousand, eight hundred eighty-one".