87023 has 4 divisors (see below), whose sum is σ = 92160. Its totient is φ = 81888.

The previous prime is 87013. The next prime is 87037. The reversal of 87023 is 32078.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87023 - 2⁶ = 86959 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 86986 and 87004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87013) 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, 2543 + ... + 2576.

It is an arithmetic number, because the mean of its divisors is an integer number (23040).

2⁸⁷⁰²³ is an apocalyptic number.

87023 is a deficient number, since it is larger than the sum of its proper divisors (5137).

87023 is a wasteful number, since it uses less digits than its factorization.

87023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5136.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 87023 is about 294.9966101500. The cubic root of 87023 is about 44.3143806275.

Subtracting from 87023 its reverse (32078), we obtain a palindrome (54945).

It can be divided in two parts, 8702 and 3, that multiplied together give a triangular number (26106 = T₂₂₈).

The spelling of 87023 in words is "eighty-seven thousand, twenty-three".