87040873 has 2 divisors, whose sum is σ = 87040874. Its totient is φ = 87040872.

The previous prime is 87040853. The next prime is 87040903. The reversal of 87040873 is 37804078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85433049 + 1607824 = 9243^2 + 1268^2 .

It is a cyclic number.

It is not a de Polignac number, because 87040873 - 2⁵ = 87040841 is a prime.

It is a super-2 number, since 2×87040873² = 15152227145204258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87040813) 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 as a sum of consecutive naturals, namely, 43520436 + 43520437.

It is an arithmetic number, because the mean of its divisors is an integer number (43520437).

Almost surely, 2^87040873 is an apocalyptic number.

It is an amenable number.

87040873 is a deficient number, since it is larger than the sum of its proper divisors (1).

87040873 is an equidigital number, since it uses as much as digits as its factorization.

87040873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 87040873 is about 9329.5698185929. The cubic root of 87040873 is about 443.1741421903.

The spelling of 87040873 in words is "eighty-seven million, forty thousand, eight hundred seventy-three".