86580221 has 24 divisors (see below), whose sum is σ = 108043200. Its totient is φ = 67931136.

The previous prime is 86580209. The next prime is 86580271. The reversal of 86580221 is 12208568.

It is not a de Polignac number, because 86580221 - 2¹⁰ = 86579197 is a prime.

It is a super-2 number, since 2×86580221² = 14992269336817682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86580271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192605 + ... + 193053.

It is an arithmetic number, because the mean of its divisors is an integer number (4501800).

Almost surely, 2^86580221 is an apocalyptic number.

It is an amenable number.

86580221 is a deficient number, since it is larger than the sum of its proper divisors (21462979).

86580221 is a wasteful number, since it uses less digits than its factorization.

86580221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 86580221 is about 9304.8493270982. The cubic root of 86580221 is about 442.3909459200.

Adding to 86580221 its reverse (12208568), we get a palindrome (98788789).

The spelling of 86580221 in words is "eighty-six million, five hundred eighty thousand, two hundred twenty-one".