84687 has 4 divisors (see below), whose sum is σ = 112920. Its totient is φ = 56456.

The previous prime is 84673. The next prime is 84691. The reversal of 84687 is 78648.

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

It is a cyclic number.

It is not a de Polignac number, because 84687 - 2⁷ = 84559 is a prime.

It is a D-number.

84687 is a lucky number.

It is a plaindrome in base 16.

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 84687.

It is not an unprimeable number, because it can be changed into a prime (84697) 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, 14112 + ... + 14117.

It is an arithmetic number, because the mean of its divisors is an integer number (28230).

2⁸⁴⁶⁸⁷ is an apocalyptic number.

84687 is a deficient number, since it is larger than the sum of its proper divisors (28233).

84687 is a wasteful number, since it uses less digits than its factorization.

84687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28232.

The product of its digits is 10752, while the sum is 33.

The square root of 84687 is about 291.0103090957. The cubic root of 84687 is about 43.9142614126.

The spelling of 84687 in words is "eighty-four thousand, six hundred eighty-seven".