216466563 has 8 divisors (see below), whose sum is σ = 303812800. Its totient is φ = 136715688.

The previous prime is 216466561. The next prime is 216466571. The reversal of 216466563 is 365664612.

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

It is not a de Polignac number, because 216466563 - 2¹ = 216466561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216466561) 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, 1898773 + ... + 1898886.

It is an arithmetic number, because the mean of its divisors is an integer number (37976600).

Almost surely, 2^216466563 is an apocalyptic number.

216466563 is a deficient number, since it is larger than the sum of its proper divisors (87346237).

216466563 is a wasteful number, since it uses less digits than its factorization.

216466563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3797681.

The product of its digits is 155520, while the sum is 39.

The square root of 216466563 is about 14712.8026901743. The cubic root of 216466563 is about 600.4316921065.

The spelling of 216466563 in words is "two hundred sixteen million, four hundred sixty-six thousand, five hundred sixty-three".