216207 has 6 divisors (see below), whose sum is σ = 312312. Its totient is φ = 144132.

The previous prime is 216179. The next prime is 216211. The reversal of 216207 is 702612.

It is a happy number.

It is not a de Polignac number, because 216207 - 2¹⁰ = 215183 is a prime.

It is an Ulam number.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 216207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216217) 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, 12003 + ... + 12020.

It is an arithmetic number, because the mean of its divisors is an integer number (52052).

2²¹⁶²⁰⁷ is an apocalyptic number.

216207 is a deficient number, since it is larger than the sum of its proper divisors (96105).

216207 is a wasteful number, since it uses less digits than its factorization.

216207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24029 (or 24026 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 216207 is about 464.9806447585. The cubic root of 216207 is about 60.0191605472.

Adding to 216207 its sum of digits (18), we get a square (216225 = 465²).

Adding to 216207 its reverse (702612), we get a palindrome (918819).

The spelling of 216207 in words is "two hundred sixteen thousand, two hundred seven".