216636086 has 8 divisors (see below), whose sum is σ = 325076664. Its totient is φ = 108277200.

The previous prime is 216636047. The next prime is 216636109. The reversal of 216636086 is 680636612.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13295 + ... + 24698.

It is an arithmetic number, because the mean of its divisors is an integer number (40634583).

Almost surely, 2^216636086 is an apocalyptic number.

216636086 is a deficient number, since it is larger than the sum of its proper divisors (108440578).

216636086 is a wasteful number, since it uses less digits than its factorization.

216636086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40846.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 216636086 is about 14718.5626336270. The cubic root of 216636086 is about 600.5883913227.

The spelling of 216636086 in words is "two hundred sixteen million, six hundred thirty-six thousand, eighty-six".