86221085 has 8 divisors (see below), whose sum is σ = 104160600. Its totient is φ = 68513344.

The previous prime is 86221067. The next prime is 86221097. The reversal of 86221085 is 58012268.

It can be written as a sum of positive squares in 4 ways, for example, as 3247204 + 82973881 = 1802^2 + 9109^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86221085 - 2⁸ = 86220829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57122 + ... + 58611.

It is an arithmetic number, because the mean of its divisors is an integer number (13020075).

Almost surely, 2^86221085 is an apocalyptic number.

It is an amenable number.

86221085 is a deficient number, since it is larger than the sum of its proper divisors (17939515).

86221085 is a wasteful number, since it uses less digits than its factorization.

86221085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115887.

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

The square root of 86221085 is about 9285.5309487395. The cubic root of 86221085 is about 441.7784168791.

The spelling of 86221085 in words is "eighty-six million, two hundred twenty-one thousand, eighty-five".