87773 has 4 divisors (see below), whose sum is σ = 100320. Its totient is φ = 75228.

The previous prime is 87767. The next prime is 87793. The reversal of 87773 is 37778.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87773 - 2⁸ = 87517 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87743) 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, 6263 + ... + 6276.

It is an arithmetic number, because the mean of its divisors is an integer number (25080).

2⁸⁷⁷⁷³ is an apocalyptic number.

It is an amenable number.

87773 is a deficient number, since it is larger than the sum of its proper divisors (12547).

87773 is a wasteful number, since it uses less digits than its factorization.

87773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12546.

The product of its digits is 8232, while the sum is 32.

The square root of 87773 is about 296.2650840042. The cubic root of 87773 is about 44.4413231604.

The spelling of 87773 in words is "eighty-seven thousand, seven hundred seventy-three".