87574 has 4 divisors (see below), whose sum is σ = 131364. Its totient is φ = 43786.

The previous prime is 87559. The next prime is 87583. The reversal of 87574 is 47578.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47578 = 2 ⋅23789.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

87574 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21892 + ... + 21895.

It is an arithmetic number, because the mean of its divisors is an integer number (32841).

2⁸⁷⁵⁷⁴ is an apocalyptic number.

87574 is a deficient number, since it is larger than the sum of its proper divisors (43790).

87574 is a wasteful number, since it uses less digits than its factorization.

87574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43789.

The product of its digits is 7840, while the sum is 31.

The square root of 87574 is about 295.9290455498. The cubic root of 87574 is about 44.4077117790.

It can be divided in two parts, 875 and 74, that added together give a palindrome (949).

The spelling of 87574 in words is "eighty-seven thousand, five hundred seventy-four".