216264517 has 16 divisors (see below), whose sum is σ = 261850240. Its totient is φ = 174477888.

The previous prime is 216264511. The next prime is 216264547. The reversal of 216264517 is 715462612.

It is a cyclic number.

It is not a de Polignac number, because 216264517 - 2¹¹ = 216262469 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 (216264511) 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, 15703 + ... + 26059.

It is an arithmetic number, because the mean of its divisors is an integer number (16365640).

Almost surely, 2^216264517 is an apocalyptic number.

It is an amenable number.

216264517 is a deficient number, since it is larger than the sum of its proper divisors (45585723).

216264517 is a wasteful number, since it uses less digits than its factorization.

216264517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10540.

The product of its digits is 20160, while the sum is 34.

The square root of 216264517 is about 14705.9347543772. The cubic root of 216264517 is about 600.2448232372.

The spelling of 216264517 in words is "two hundred sixteen million, two hundred sixty-four thousand, five hundred seventeen".