87040317 has 48 divisors (see below), whose sum is σ = 149436672. Its totient is φ = 44634240.

The previous prime is 87040307. The next prime is 87040319. The reversal of 87040317 is 71304078.

It is a happy number.

It is not a de Polignac number, because 87040317 - 2⁴ = 87040301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87040319) 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 47 ways as a sum of consecutive naturals, for example, 70092 + ... + 71322.

It is an arithmetic number, because the mean of its divisors is an integer number (3113264).

Almost surely, 2^87040317 is an apocalyptic number.

It is an amenable number.

87040317 is a deficient number, since it is larger than the sum of its proper divisors (62396355).

87040317 is a wasteful number, since it uses less digits than its factorization.

87040317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298 (or 1291 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 87040317 is about 9329.5400208156. The cubic root of 87040317 is about 443.1731985519.

The spelling of 87040317 in words is "eighty-seven million, forty thousand, three hundred seventeen".