87983 has 4 divisors (see below), whose sum is σ = 100560. Its totient is φ = 75408.

The previous prime is 87977. The next prime is 87991. The reversal of 87983 is 38978.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38978 = 2 ⋅19489.

It is a cyclic number.

It is not a de Polignac number, because 87983 - 2¹⁰ = 86959 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87943) 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, 6278 + ... + 6291.

It is an arithmetic number, because the mean of its divisors is an integer number (25140).

2⁸⁷⁹⁸³ is an apocalyptic number.

87983 is a deficient number, since it is larger than the sum of its proper divisors (12577).

87983 is a wasteful number, since it uses less digits than its factorization.

87983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12576.

The product of its digits is 12096, while the sum is 35.

The square root of 87983 is about 296.6192846057. The cubic root of 87983 is about 44.4767374101.

The spelling of 87983 in words is "eighty-seven thousand, nine hundred eighty-three".