216706712 has 8 divisors (see below), whose sum is σ = 406325100. Its totient is φ = 108353352.

The previous prime is 216706703. The next prime is 216706727. The reversal of 216706712 is 217607612.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13544162 + ... + 13544177.

Almost surely, 2^216706712 is an apocalyptic number.

It is an amenable number.

216706712 is a deficient number, since it is larger than the sum of its proper divisors (189618388).

216706712 is a wasteful number, since it uses less digits than its factorization.

216706712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27088345 (or 27088341 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 216706712 is about 14720.9616533703. The cubic root of 216706712 is about 600.6536506058.

It can be divided in two parts, 21670 and 6712, that added together give a palindrome (28382).

The spelling of 216706712 in words is "two hundred sixteen million, seven hundred six thousand, seven hundred twelve".