216683066 has 16 divisors (see below), whose sum is σ = 332916480. Its totient is φ = 105724560.

The previous prime is 216682993. The next prime is 216683081. The reversal of 216683066 is 660386612.

216683066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30536 + ... + 36956.

It is an arithmetic number, because the mean of its divisors is an integer number (20807280).

Almost surely, 2^216683066 is an apocalyptic number.

216683066 is a deficient number, since it is larger than the sum of its proper divisors (116233414).

216683066 is a wasteful number, since it uses less digits than its factorization.

216683066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6829.

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

The square root of 216683066 is about 14720.1584909946. The cubic root of 216683066 is about 600.6318029933.

The spelling of 216683066 in words is "two hundred sixteen million, six hundred eighty-three thousand, sixty-six".