87205317 has 4 divisors (see below), whose sum is σ = 116273760. Its totient is φ = 58136876.

The previous prime is 87205309. The next prime is 87205343. The reversal of 87205317 is 71350278.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87205317 - 2³ = 87205309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87205357) 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, 14534217 + ... + 14534222.

It is an arithmetic number, because the mean of its divisors is an integer number (29068440).

Almost surely, 2^87205317 is an apocalyptic number.

It is an amenable number.

87205317 is a deficient number, since it is larger than the sum of its proper divisors (29068443).

87205317 is a wasteful number, since it uses less digits than its factorization.

87205317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29068442.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 87205317 is about 9338.3787136740. The cubic root of 87205317 is about 443.4530589765.

The spelling of 87205317 in words is "eighty-seven million, two hundred five thousand, three hundred seventeen".