216556063 has 8 divisors (see below), whose sum is σ = 226151136. Its totient is φ = 206976000.

The previous prime is 216556061. The next prime is 216556069. The reversal of 216556063 is 360655612.

216556063 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216556063 - 2¹ = 216556061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216556061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33883 + ... + 39763.

It is an arithmetic number, because the mean of its divisors is an integer number (28268892).

Almost surely, 2^216556063 is an apocalyptic number.

216556063 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

216556063 is a deficient number, since it is larger than the sum of its proper divisors (9595073).

216556063 is a wasteful number, since it uses less digits than its factorization.

216556063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7505.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 216556063 is about 14715.8439445381. The cubic root of 216556063 is about 600.5144319550.

The spelling of 216556063 in words is "two hundred sixteen million, five hundred fifty-six thousand, sixty-three".