87284671 has 4 divisors (see below), whose sum is σ = 87307072. Its totient is φ = 87262272.

The previous prime is 87284669. The next prime is 87284677. The reversal of 87284671 is 17648278.

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 87284671 - 2¹ = 87284669 is a prime.

It is a super-2 number, since 2×87284671² = 15237227583156482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87284677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3666 + ... + 13711.

It is an arithmetic number, because the mean of its divisors is an integer number (21826768).

Almost surely, 2^87284671 is an apocalyptic number.

87284671 is a deficient number, since it is larger than the sum of its proper divisors (22401).

87284671 is a wasteful number, since it uses less digits than its factorization.

87284671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22400.

The product of its digits is 150528, while the sum is 43.

The square root of 87284671 is about 9342.6265578797. The cubic root of 87284671 is about 443.5875274806.

The spelling of 87284671 in words is "eighty-seven million, two hundred eighty-four thousand, six hundred seventy-one".