89687 has 4 divisors (see below), whose sum is σ = 96600. Its totient is φ = 82776.

The previous prime is 89681. The next prime is 89689. The reversal of 89687 is 78698.

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 89687 - 2⁴ = 89671 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89681) 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, 3437 + ... + 3462.

It is an arithmetic number, because the mean of its divisors is an integer number (24150).

2⁸⁹⁶⁸⁷ is an apocalyptic number.

89687 is a deficient number, since it is larger than the sum of its proper divisors (6913).

89687 is a wasteful number, since it uses less digits than its factorization.

89687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6912.

The product of its digits is 24192, while the sum is 38.

The square root of 89687 is about 299.4778789827. The cubic root of 89687 is about 44.7620360247.

The spelling of 89687 in words is "eighty-nine thousand, six hundred eighty-seven".