216986075 has 12 divisors (see below), whose sum is σ = 274788960. Its totient is φ = 169894560.

The previous prime is 216986059. The next prime is 216986101. The reversal of 216986075 is 570689612.

It is not a de Polignac number, because 216986075 - 2⁴ = 216986059 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 91160 + ... + 93509.

It is an arithmetic number, because the mean of its divisors is an integer number (22899080).

Almost surely, 2^216986075 is an apocalyptic number.

216986075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

216986075 is a deficient number, since it is larger than the sum of its proper divisors (57802885).

216986075 is a wasteful number, since it uses less digits than its factorization.

216986075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184726 (or 184721 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 216986075 is about 14730.4472097761. The cubic root of 216986075 is about 600.9116465402.

The spelling of 216986075 in words is "two hundred sixteen million, nine hundred eighty-six thousand, seventy-five".