87020973 has 48 divisors (see below), whose sum is σ = 142076480. Its totient is φ = 53222832.

The previous prime is 87020963. The next prime is 87020981. The reversal of 87020973 is 37902078.

It is not a de Polignac number, because 87020973 - 2¹⁰ = 87019949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87020933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 533790 + ... + 533952.

Almost surely, 2^87020973 is an apocalyptic number.

It is an amenable number.

87020973 is a deficient number, since it is larger than the sum of its proper divisors (55055507).

87020973 is an equidigital number, since it uses as much as digits as its factorization.

87020973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 87020973 is about 9328.5032561499. The cubic root of 87020973 is about 443.1403655774.

The spelling of 87020973 in words is "eighty-seven million, twenty thousand, nine hundred seventy-three".