86663215 has 16 divisors (see below), whose sum is σ = 106684128. Its totient is φ = 67556736.

The previous prime is 86663209. The next prime is 86663219. The reversal of 86663215 is 51236668.

It is a cyclic number.

It is not a de Polignac number, because 86663215 - 2³ = 86663207 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 (86663219) 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, 40564 + ... + 42646.

It is an arithmetic number, because the mean of its divisors is an integer number (6667758).

Almost surely, 2^86663215 is an apocalyptic number.

86663215 is a deficient number, since it is larger than the sum of its proper divisors (20020913).

86663215 is a wasteful number, since it uses less digits than its factorization.

86663215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298.

The product of its digits is 51840, while the sum is 37.

The square root of 86663215 is about 9309.3079764288. The cubic root of 86663215 is about 442.5322563652.

It can be divided in two parts, 8666 and 3215, that added together give a square (11881 = 109²).

The spelling of 86663215 in words is "eighty-six million, six hundred sixty-three thousand, two hundred fifteen".