216017166 has 16 divisors (see below), whose sum is σ = 435333888. Its totient is φ = 71455800.

The previous prime is 216017161. The next prime is 216017167. The reversal of 216017166 is 661710612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216017161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136630 + ... + 138201.

It is an arithmetic number, because the mean of its divisors is an integer number (27208368).

Almost surely, 2^216017166 is an apocalyptic number.

216017166 is an abundant number, since it is smaller than the sum of its proper divisors (219316722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216017166 is a wasteful number, since it uses less digits than its factorization.

216017166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274967.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 216017166 is about 14697.5224442761. The cubic root of 216017166 is about 600.0158940234.

Adding to 216017166 its reverse (661710612), we get a palindrome (877727778).

The spelling of 216017166 in words is "two hundred sixteen million, seventeen thousand, one hundred sixty-six".