86815222 has 8 divisors (see below), whose sum is σ = 140240016. Its totient is φ = 40068552.

The previous prime is 86815217. The next prime is 86815229. The reversal of 86815222 is 22251868.

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

It is a super-3 number, since 3×86815222³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86815229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1669498 + ... + 1669549.

It is an arithmetic number, because the mean of its divisors is an integer number (17530002).

Almost surely, 2^86815222 is an apocalyptic number.

86815222 is a deficient number, since it is larger than the sum of its proper divisors (53424794).

86815222 is a wasteful number, since it uses less digits than its factorization.

86815222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3339062.

The product of its digits is 15360, while the sum is 34.

The square root of 86815222 is about 9317.4686476532. The cubic root of 86815222 is about 442.7908386241.

The spelling of 86815222 in words is "eighty-six million, eight hundred fifteen thousand, two hundred twenty-two".