87586 has 4 divisors (see below), whose sum is σ = 131382. Its totient is φ = 43792.

The previous prime is 87583. The next prime is 87587. The reversal of 87586 is 68578.

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

It can be written as a sum of positive squares in only one way, i.e., 53361 + 34225 = 231^2 + 185^2 .

It is not an unprimeable number, because it can be changed into a prime (87583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21895 + ... + 21898.

2⁸⁷⁵⁸⁶ is an apocalyptic number.

87586 is a deficient number, since it is larger than the sum of its proper divisors (43796).

87586 is a wasteful number, since it uses less digits than its factorization.

87586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43795.

The product of its digits is 13440, while the sum is 34.

The square root of 87586 is about 295.9493199857. The cubic root of 87586 is about 44.4097400378.

It can be divided in two parts, 875 and 86, that added together give a square (961 = 31²).

The spelling of 87586 in words is "eighty-seven thousand, five hundred eighty-six".