87042713 has 8 divisors (see below), whose sum is σ = 89988360. Its totient is φ = 84136320.

The previous prime is 87042689. The next prime is 87042721. The reversal of 87042713 is 31724078.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8684809 + 78357904 = 2947^2 + 8852^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87042713 - 2²⁰ = 85994137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87042713.

It is not an unprimeable number, because it can be changed into a prime (87042763) 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 7 ways as a sum of consecutive naturals, for example, 5270 + ... + 14207.

It is an arithmetic number, because the mean of its divisors is an integer number (11248545).

Almost surely, 2^87042713 is an apocalyptic number.

It is an amenable number.

87042713 is a deficient number, since it is larger than the sum of its proper divisors (2945647).

87042713 is a wasteful number, since it uses less digits than its factorization.

87042713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19627.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 87042713 is about 9329.6684292637. The cubic root of 87042713 is about 443.1772649940.

The spelling of 87042713 in words is "eighty-seven million, forty-two thousand, seven hundred thirteen".