216415463 has 16 divisors (see below), whose sum is σ = 239645952. Its totient is φ = 193800000.

The previous prime is 216415421. The next prime is 216415469. The reversal of 216415463 is 364514612.

It is a cyclic number.

It is not a de Polignac number, because 216415463 - 2¹⁰ = 216414439 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216415469) 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 15 ways as a sum of consecutive naturals, for example, 284003 + ... + 284763.

It is an arithmetic number, because the mean of its divisors is an integer number (14977872).

Almost surely, 2^216415463 is an apocalyptic number.

216415463 is a deficient number, since it is larger than the sum of its proper divisors (23230489).

216415463 is a wasteful number, since it uses less digits than its factorization.

216415463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126.

The product of its digits is 17280, while the sum is 32.

The square root of 216415463 is about 14711.0660048822. The cubic root of 216415463 is about 600.3844415848.

The spelling of 216415463 in words is "two hundred sixteen million, four hundred fifteen thousand, four hundred sixty-three".