87863 has 4 divisors (see below), whose sum is σ = 90048. Its totient is φ = 85680.

The previous prime is 87853. The next prime is 87869. The reversal of 87863 is 36878.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36878 = 2 ⋅18439.

It is a cyclic number.

It is not a de Polignac number, because 87863 - 2¹⁴ = 71479 is a prime.

It is a super-3 number, since 3×87863³ = 2034882505333941, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 87863.

It is not an unprimeable number, because it can be changed into a prime (87869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1031 + ... + 1112.

It is an arithmetic number, because the mean of its divisors is an integer number (22512).

2⁸⁷⁸⁶³ is an apocalyptic number.

87863 is a deficient number, since it is larger than the sum of its proper divisors (2185).

87863 is a wasteful number, since it uses less digits than its factorization.

87863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184.

The product of its digits is 8064, while the sum is 32.

The square root of 87863 is about 296.4169360883. The cubic root of 87863 is about 44.4565076051.

The spelling of 87863 in words is "eighty-seven thousand, eight hundred sixty-three".