86600221 has 4 divisors (see below), whose sum is σ = 90365472. Its totient is φ = 82834972.

The previous prime is 86600201. The next prime is 86600231. The reversal of 86600221 is 12200668.

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 86600221 - 2²³ = 78211613 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 (86600201) 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, 1882591 + ... + 1882636.

It is an arithmetic number, because the mean of its divisors is an integer number (22591368).

Almost surely, 2^86600221 is an apocalyptic number.

It is an amenable number.

86600221 is a deficient number, since it is larger than the sum of its proper divisors (3765251).

86600221 is a wasteful number, since it uses less digits than its factorization.

86600221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3765250.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 86600221 is about 9305.9239734698. The cubic root of 86600221 is about 442.4250073473.

Adding to 86600221 its reverse (12200668), we get a palindrome (98800889).

The spelling of 86600221 in words is "eighty-six million, six hundred thousand, two hundred twenty-one".