213466 has 16 divisors (see below), whose sum is σ = 361728. Its totient is φ = 93600.

The previous prime is 213461. The next prime is 213467. The reversal of 213466 is 664312.

213466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (213461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526 + ... + 838.

It is an arithmetic number, because the mean of its divisors is an integer number (22608).

213466 is a Friedman number, since it can be written as 626*341, using all its digits and the basic arithmetic operations.

It is a vampire number, since it can be written as 341 ⋅ 626 (with its own digits).

2²¹³⁴⁶⁶ is an apocalyptic number.

213466 is a deficient number, since it is larger than the sum of its proper divisors (148262).

213466 is a wasteful number, since it uses less digits than its factorization.

213466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357.

The product of its digits is 864, while the sum is 22.

The square root of 213466 is about 462.0238089103. The cubic root of 213466 is about 59.7644468256.

Subtracting from 213466 its sum of digits (22), we obtain a square (213444 = 462²).

Adding to 213466 its reverse (664312), we get a palindrome (877778).

The spelling of 213466 in words is "two hundred thirteen thousand, four hundred sixty-six".