87982173 has 16 divisors (see below), whose sum is σ = 132805440. Its totient is φ = 57547152.

The previous prime is 87982159. The next prime is 87982229. The reversal of 87982173 is 37128978.

It is not a de Polignac number, because 87982173 - 2⁹ = 87981661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87982133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29311 + ... + 32172.

It is an arithmetic number, because the mean of its divisors is an integer number (8300340).

Almost surely, 2^87982173 is an apocalyptic number.

It is an amenable number.

87982173 is a deficient number, since it is larger than the sum of its proper divisors (44823267).

87982173 is a wasteful number, since it uses less digits than its factorization.

87982173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61545 (or 61539 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 87982173 is about 9379.8812892275. The cubic root of 87982173 is about 444.7659805604.

The spelling of 87982173 in words is "eighty-seven million, nine hundred eighty-two thousand, one hundred seventy-three".