59987 has 4 divisors (see below), whose sum is σ = 60480. Its totient is φ = 59496.

The previous prime is 59981. The next prime is 59999. The reversal of 59987 is 78995.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 59987 - 2⁴ = 59971 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 59987.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 59987.

It is not an unprimeable number, because it can be changed into a prime (59981) 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, 89 + ... + 357.

It is an arithmetic number, because the mean of its divisors is an integer number (15120).

2⁵⁹⁹⁸⁷ is an apocalyptic number.

59987 is a deficient number, since it is larger than the sum of its proper divisors (493).

59987 is a wasteful number, since it uses less digits than its factorization.

59987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492.

The product of its digits is 22680, while the sum is 38.

The square root of 59987 is about 244.9224367019. The cubic root of 59987 is about 39.1458488031.

Adding to 59987 its sum of digits (38), we get a square (60025 = 245²).

It can be divided in two parts, 599 and 87, that added together give a palindrome (686).

The spelling of 59987 in words is "fifty-nine thousand, nine hundred eighty-seven".