216711064 has 16 divisors (see below), whose sum is σ = 414000720. Its totient is φ = 106310880.

The previous prime is 216711041. The next prime is 216711067. The reversal of 216711064 is 460117612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216711067) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 255132 + ... + 255979.

It is an arithmetic number, because the mean of its divisors is an integer number (25875045).

Almost surely, 2^216711064 is an apocalyptic number.

It is an amenable number.

216711064 is a deficient number, since it is larger than the sum of its proper divisors (197289656).

216711064 is a wasteful number, since it uses less digits than its factorization.

216711064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511170 (or 511166 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 216711064 is about 14721.1094690584. The cubic root of 216711064 is about 600.6576714430.

Adding to 216711064 its reverse (460117612), we get a palindrome (676828676).

It can be divided in two parts, 2167 and 11064, that added together give a palindrome (13231).

The spelling of 216711064 in words is "two hundred sixteen million, seven hundred eleven thousand, sixty-four".