87786 has 12 divisors (see below), whose sum is σ = 190242. Its totient is φ = 29256.

The previous prime is 87767. The next prime is 87793. The reversal of 87786 is 68778.

It is a happy number.

87786 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in only one way, i.e., 81225 + 6561 = 285^2 + 81^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87786.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 87786.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2421 + ... + 2456.

2⁸⁷⁷⁸⁶ is an apocalyptic number.

87786 is an abundant number, since it is smaller than the sum of its proper divisors (102456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87786 is a wasteful number, since it uses less digits than its factorization.

87786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4885 (or 4882 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 87786 is about 296.2870230030. The cubic root of 87786 is about 44.4435171103.

The spelling of 87786 in words is "eighty-seven thousand, seven hundred eighty-six".