216367 has 4 divisors (see below), whose sum is σ = 219976. Its totient is φ = 212760.

The previous prime is 216347. The next prime is 216371. The reversal of 216367 is 763612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216367 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1713 + ... + 1834.

It is an arithmetic number, because the mean of its divisors is an integer number (54994).

2²¹⁶³⁶⁷ is an apocalyptic number.

216367 is a deficient number, since it is larger than the sum of its proper divisors (3609).

216367 is an equidigital number, since it uses as much as digits as its factorization.

216367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3608.

The product of its digits is 1512, while the sum is 25.

The square root of 216367 is about 465.1526631118. The cubic root of 216367 is about 60.0339622539.

Adding to 216367 its reverse (763612), we get a palindrome (979979).

The spelling of 216367 in words is "two hundred sixteen thousand, three hundred sixty-seven".