86682217 has 4 divisors (see below), whose sum is σ = 86703696. Its totient is φ = 86660740.

The previous prime is 86682163. The next prime is 86682221. The reversal of 86682217 is 71228668.

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 a de Polignac number, because none of the positive numbers 2^k-86682217 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 86682217.

It is not an unprimeable number, because it can be changed into a prime (86682287) 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, 2659 + ... + 13432.

It is an arithmetic number, because the mean of its divisors is an integer number (21675924).

Almost surely, 2^86682217 is an apocalyptic number.

It is an amenable number.

86682217 is a deficient number, since it is larger than the sum of its proper divisors (21479).

86682217 is a wasteful number, since it uses less digits than its factorization.

86682217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21478.

The product of its digits is 64512, while the sum is 40.

The square root of 86682217 is about 9310.3285119270. The cubic root of 86682217 is about 442.5645975895.

It can be divided in two parts, 8 and 6682217, that added together give a square (6682225 = 2585²).

The spelling of 86682217 in words is "eighty-six million, six hundred eighty-two thousand, two hundred seventeen".