216015717 has 16 divisors (see below), whose sum is σ = 293162688. Its totient is φ = 141459840.

The previous prime is 216015707. The next prime is 216015733. The reversal of 216015717 is 717510612.

It is not a de Polignac number, because 216015717 - 2¹⁰ = 216014693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216015707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42673 + ... + 47465.

It is an arithmetic number, because the mean of its divisors is an integer number (18322668).

Almost surely, 2^216015717 is an apocalyptic number.

It is an amenable number.

216015717 is a deficient number, since it is larger than the sum of its proper divisors (77146971).

216015717 is a wasteful number, since it uses less digits than its factorization.

216015717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060.

The product of its (nonzero) digits is 2940, while the sum is 30.

The square root of 216015717 is about 14697.4731501711. The cubic root of 216015717 is about 600.0145524248.

The spelling of 216015717 in words is "two hundred sixteen million, fifteen thousand, seven hundred seventeen".