86860221 has 16 divisors (see below), whose sum is σ = 132870144. Its totient is φ = 49442544.

The previous prime is 86860217. The next prime is 86860273. The reversal of 86860221 is 12206868.

It is not a de Polignac number, because 86860221 - 2² = 86860217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86860321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2341 + ... + 13386.

It is an arithmetic number, because the mean of its divisors is an integer number (8304384).

Almost surely, 2^86860221 is an apocalyptic number.

It is an amenable number.

86860221 is a deficient number, since it is larger than the sum of its proper divisors (46009923).

86860221 is a wasteful number, since it uses less digits than its factorization.

86860221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16000.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 86860221 is about 9319.8831001252. The cubic root of 86860221 is about 442.8673294471.

The spelling of 86860221 in words is "eighty-six million, eight hundred sixty thousand, two hundred twenty-one".