206510216 has 24 divisors (see below), whose sum is σ = 425609310. Its totient is φ = 93867840.

The previous prime is 206510191. The next prime is 206510219. The reversal of 206510216 is 612015602.

It can be written as a sum of positive squares in only one way, i.e., 200109316 + 6400900 = 14146^2 + 2530^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 206510191 and 206510200.

It is not an unprimeable number, because it can be changed into a prime (206510219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105701 + ... + 107636.

Almost surely, 2^206510216 is an apocalyptic number.

It is an amenable number.

206510216 is an abundant number, since it is smaller than the sum of its proper divisors (219099094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206510216 is a wasteful number, since it uses less digits than its factorization.

206510216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213365 (or 213350 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 206510216 is about 14370.4633189052. The cubic root of 206510216 is about 591.0812462325.

Adding to 206510216 its reverse (612015602), we get a palindrome (818525818).

The spelling of 206510216 in words is "two hundred six million, five hundred ten thousand, two hundred sixteen".