816466 has 16 divisors (see below), whose sum is σ = 1448640. Its totient is φ = 337680.

The previous prime is 816451. The next prime is 816469. The reversal of 816466 is 664618.

816466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 12.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816469) by changing a digit.

816466 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600 + ... + 1411.

It is an arithmetic number, because the mean of its divisors is an integer number (90540).

2⁸¹⁶⁴⁶⁶ is an apocalyptic number.

816466 is a deficient number, since it is larger than the sum of its proper divisors (632174).

816466 is a wasteful number, since it uses less digits than its factorization.

816466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049.

The product of its digits is 6912, while the sum is 31.

The square root of 816466 is about 903.5850817715. The cubic root of 816466 is about 93.4643596231.

The spelling of 816466 in words is "eight hundred sixteen thousand, four hundred sixty-six".