87713317 has 4 divisors (see below), whose sum is σ = 88617676. Its totient is φ = 86808960.

The previous prime is 87713293. The next prime is 87713323. The reversal of 87713317 is 71331778.

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 65302561 + 22410756 = 8081^2 + 4734^2 .

It is a cyclic number.

It is not a de Polignac number, because 87713317 - 2⁷ = 87713189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87713377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452034 + ... + 452227.

It is an arithmetic number, because the mean of its divisors is an integer number (22154419).

Almost surely, 2^87713317 is an apocalyptic number.

It is an amenable number.

87713317 is a deficient number, since it is larger than the sum of its proper divisors (904359).

87713317 is an equidigital number, since it uses as much as digits as its factorization.

87713317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904358.

The product of its digits is 24696, while the sum is 37.

The square root of 87713317 is about 9365.5387992363. The cubic root of 87713317 is about 444.3124795545.

It can be divided in two parts, 877133 and 17, that added together give a triangular number (877150 = T₁₃₂₄).

The spelling of 87713317 in words is "eighty-seven million, seven hundred thirteen thousand, three hundred seventeen".