216417117 has 16 divisors (see below), whose sum is σ = 333486720. Its totient is φ = 122276352.

The previous prime is 216417083. The next prime is 216417127. The reversal of 216417117 is 711714612.

It is not a de Polignac number, because 216417117 - 2⁷ = 216416989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216417127) 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, 56028 + ... + 59765.

It is an arithmetic number, because the mean of its divisors is an integer number (20842920).

Almost surely, 2^216417117 is an apocalyptic number.

It is an amenable number.

216417117 is a deficient number, since it is larger than the sum of its proper divisors (117069603).

216417117 is a wasteful number, since it uses less digits than its factorization.

216417117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115892.

The product of its digits is 2352, while the sum is 30.

The square root of 216417117 is about 14711.1222209592. The cubic root of 216417117 is about 600.3859711017.

The spelling of 216417117 in words is "two hundred sixteen million, four hundred seventeen thousand, one hundred seventeen".