216675 has 30 divisors (see below), whose sum is σ = 405108. Its totient is φ = 114480.

The previous prime is 216661. The next prime is 216679. The reversal of 216675 is 576612.

It is not a de Polignac number, because 216675 - 2¹² = 212579 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (216679) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1972 + ... + 2078.

2²¹⁶⁶⁷⁵ is an apocalyptic number.

216675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

216675 is a deficient number, since it is larger than the sum of its proper divisors (188433).

216675 is a wasteful number, since it uses less digits than its factorization.

216675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 115 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 216675 is about 465.4836194755. The cubic root of 216675 is about 60.0624350086.

The spelling of 216675 in words is "two hundred sixteen thousand, six hundred seventy-five".