86917321 has 16 divisors (see below), whose sum is σ = 91808640. Its totient is φ = 82176640.

The previous prime is 86917309. The next prime is 86917331. The reversal of 86917321 is 12371968.

It is a cyclic number.

It is not a de Polignac number, because 86917321 - 2¹¹ = 86915273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86917331) 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 15 ways as a sum of consecutive naturals, for example, 520380 + ... + 520546.

It is an arithmetic number, because the mean of its divisors is an integer number (5738040).

Almost surely, 2^86917321 is an apocalyptic number.

It is an amenable number.

86917321 is a deficient number, since it is larger than the sum of its proper divisors (4891319).

86917321 is a wasteful number, since it uses less digits than its factorization.

86917321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464.

The product of its digits is 18144, while the sum is 37.

The square root of 86917321 is about 9322.9459399913. The cubic root of 86917321 is about 442.9643519392.

The spelling of 86917321 in words is "eighty-six million, nine hundred seventeen thousand, three hundred twenty-one".