87806 has 8 divisors (see below), whose sum is σ = 134904. Its totient is φ = 42840.

The previous prime is 87803. The next prime is 87811. The reversal of 87806 is 60878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87803) 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, 425 + ... + 596.

It is an arithmetic number, because the mean of its divisors is an integer number (16863).

2⁸⁷⁸⁰⁶ is an apocalyptic number.

87806 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

87806 is a deficient number, since it is larger than the sum of its proper divisors (47098).

87806 is a wasteful number, since it uses less digits than its factorization.

87806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 87806 is about 296.3207721372. The cubic root of 87806 is about 44.4468919948.

The spelling of 87806 in words is "eighty-seven thousand, eight hundred six".