87100487 has 4 divisors (see below), whose sum is σ = 87128040. Its totient is φ = 87072936.

The previous prime is 87100439. The next prime is 87100501. The reversal of 87100487 is 78400178.

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 87100487 - 2¹⁸ = 86838343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87100187) 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, 8312 + ... + 15597.

It is an arithmetic number, because the mean of its divisors is an integer number (21782010).

Almost surely, 2^87100487 is an apocalyptic number.

87100487 is a deficient number, since it is larger than the sum of its proper divisors (27553).

87100487 is a wasteful number, since it uses less digits than its factorization.

87100487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27552.

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 87100487 is about 9332.7641671693. The cubic root of 87100487 is about 443.2752952585.

The spelling of 87100487 in words is "eighty-seven million, one hundred thousand, four hundred eighty-seven".