216757115 has 16 divisors (see below), whose sum is σ = 269746176. Its totient is φ = 167032800.

The previous prime is 216757081. The next prime is 216757133. The reversal of 216757115 is 511757612.

It is not a de Polignac number, because 216757115 - 2¹⁴ = 216740731 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31430 + ... + 37700.

It is an arithmetic number, because the mean of its divisors is an integer number (16859136).

Almost surely, 2^216757115 is an apocalyptic number.

216757115 is a deficient number, since it is larger than the sum of its proper divisors (52989061).

216757115 is a wasteful number, since it uses less digits than its factorization.

216757115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6530.

The product of its digits is 14700, while the sum is 35.

The square root of 216757115 is about 14722.6735004210. The cubic root of 216757115 is about 600.7002149213.

The spelling of 216757115 in words is "two hundred sixteen million, seven hundred fifty-seven thousand, one hundred fifteen".