451806 has 16 divisors (see below), whose sum is σ = 910224. Its totient is φ = 149504.

The previous prime is 451799. The next prime is 451823. The reversal of 451806 is 608154.

It is a Curzon number.

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 451806.

It is an unprimeable number.

451806 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, 1396 + ... + 1688.

It is an arithmetic number, because the mean of its divisors is an integer number (56889).

2⁴⁵¹⁸⁰⁶ is an apocalyptic number.

451806 is an abundant number, since it is smaller than the sum of its proper divisors (458418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451806 is a wasteful number, since it uses less digits than its factorization.

451806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 451806 is about 672.1651582759. The cubic root of 451806 is about 76.7333215748.

The spelling of 451806 in words is "four hundred fifty-one thousand, eight hundred six".