216660112 has 10 divisors (see below), whose sum is σ = 419778998. Its totient is φ = 108330048.

The previous prime is 216660091. The next prime is 216660181. The reversal of 216660112 is 211066612.

216660112 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 only one way, i.e., 199487376 + 17172736 = 14124^2 + 4144^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6770613 + ... + 6770644.

Almost surely, 2^216660112 is an apocalyptic number.

It is an amenable number.

216660112 is a deficient number, since it is larger than the sum of its proper divisors (203118886).

216660112 is a wasteful number, since it uses less digits than its factorization.

216660112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13541265 (or 13541259 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 216660112 is about 14719.3787912398. The cubic root of 216660112 is about 600.6105932305.

The spelling of 216660112 in words is "two hundred sixteen million, six hundred sixty thousand, one hundred twelve".