216503006 has 16 divisors (see below), whose sum is σ = 327628800. Its totient is φ = 107297688.

The previous prime is 216502999. The next prime is 216503011. The reversal of 216503006 is 600305612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136325 + ... + 137903.

It is an arithmetic number, because the mean of its divisors is an integer number (20476800).

Almost surely, 2^216503006 is an apocalyptic number.

216503006 is a deficient number, since it is larger than the sum of its proper divisors (111125794).

216503006 is a wasteful number, since it uses less digits than its factorization.

216503006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 216503006 is about 14714.0411172458. The cubic root of 216503006 is about 600.4653852306.

Adding to 216503006 its reverse (600305612), we get a palindrome (816808618).

The spelling of 216503006 in words is "two hundred sixteen million, five hundred three thousand, six".