218463 has 16 divisors (see below), whose sum is σ = 339456. Its totient is φ = 122400.

The previous prime is 218461. The next prime is 218479. The reversal of 218463 is 364812.

It is a happy number.

It is not a de Polignac number, because 218463 - 2¹ = 218461 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 218463.

It is not an unprimeable number, because it can be changed into a prime (218461) 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, 2070 + ... + 2172.

It is an arithmetic number, because the mean of its divisors is an integer number (21216).

2²¹⁸⁴⁶³ is an apocalyptic number.

218463 is a deficient number, since it is larger than the sum of its proper divisors (120993).

218463 is a wasteful number, since it uses less digits than its factorization.

218463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214.

The product of its digits is 1152, while the sum is 24.

The square root of 218463 is about 467.4002567393. The cubic root of 218463 is about 60.2271941831.

The spelling of 218463 in words is "two hundred eighteen thousand, four hundred sixty-three".