87430873 has 4 divisors (see below), whose sum is σ = 88864228. Its totient is φ = 85997520.

The previous prime is 87430793. The next prime is 87430879. The reversal of 87430873 is 37803478.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50013184 + 37417689 = 7072^2 + 6117^2 .

It is a cyclic number.

It is not a de Polignac number, because 87430873 - 2¹³ = 87422681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87430879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 716586 + ... + 716707.

It is an arithmetic number, because the mean of its divisors is an integer number (22216057).

Almost surely, 2^87430873 is an apocalyptic number.

It is an amenable number.

87430873 is a deficient number, since it is larger than the sum of its proper divisors (1433355).

87430873 is a wasteful number, since it uses less digits than its factorization.

87430873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433354.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 87430873 is about 9350.4477432902. The cubic root of 87430873 is about 443.8350593277.

The spelling of 87430873 in words is "eighty-seven million, four hundred thirty thousand, eight hundred seventy-three".