207216166 has 12 divisors (see below), whose sum is σ = 328045572. Its totient is φ = 98154684.

The previous prime is 207216161. The next prime is 207216197. The reversal of 207216166 is 661612702.

It is a happy number.

207216166 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207216161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142780 + ... + 144223.

It is an arithmetic number, because the mean of its divisors is an integer number (27337131).

Almost surely, 2^207216166 is an apocalyptic number.

207216166 is a deficient number, since it is larger than the sum of its proper divisors (120829406).

207216166 is a wasteful number, since it uses less digits than its factorization.

207216166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287043 (or 287024 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 207216166 is about 14395.0048975330. The cubic root of 207216166 is about 591.7540123467.

Adding to 207216166 its reverse (661612702), we get a palindrome (868828868).

The spelling of 207216166 in words is "two hundred seven million, two hundred sixteen thousand, one hundred sixty-six".