216268564 has 12 divisors (see below), whose sum is σ = 398389600. Its totient is φ = 102442968.

The previous prime is 216268561. The next prime is 216268579. The reversal of 216268564 is 465862612.

216268564 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 (216268561) 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, 1422744 + ... + 1422895.

Almost surely, 2^216268564 is an apocalyptic number.

It is an amenable number.

216268564 is a deficient number, since it is larger than the sum of its proper divisors (182121036).

216268564 is a wasteful number, since it uses less digits than its factorization.

216268564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2845662 (or 2845660 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 216268564 is about 14706.0723512432. The cubic root of 216268564 is about 600.2485673799.

The spelling of 216268564 in words is "two hundred sixteen million, two hundred sixty-eight thousand, five hundred sixty-four".