216166084 has 12 divisors (see below), whose sum is σ = 400543164. Its totient is φ = 101725184.

The previous prime is 216166073. The next prime is 216166123. The reversal of 216166084 is 480661612.

216166084 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 133864900 + 82301184 = 11570^2 + 9072^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 1589389 + ... + 1589524.

It is an arithmetic number, because the mean of its divisors is an integer number (33378597).

Almost surely, 2^216166084 is an apocalyptic number.

It is an amenable number.

216166084 is a deficient number, since it is larger than the sum of its proper divisors (184377080).

216166084 is a wasteful number, since it uses less digits than its factorization.

216166084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3178934 (or 3178932 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 216166084 is about 14702.5876634013. The cubic root of 216166084 is about 600.1537420837.

The spelling of 216166084 in words is "two hundred sixteen million, one hundred sixty-six thousand, eighty-four".