406500813 has 12 divisors (see below), whose sum is σ = 589338048. Its totient is φ = 269998920.

The previous prime is 406500797. The next prime is 406500817. The reversal of 406500813 is 318005604.

406500813 is a `hidden beast` number, since 4 + 0 + 650 + 0 + 8 + 1 + 3 = 666.

It is not a de Polignac number, because 406500813 - 2⁴ = 406500797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406500817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80895 + ... + 85772.

It is an arithmetic number, because the mean of its divisors is an integer number (49111504).

Almost surely, 2^406500813 is an apocalyptic number.

It is an amenable number.

406500813 is a deficient number, since it is larger than the sum of its proper divisors (182837235).

406500813 is a wasteful number, since it uses less digits than its factorization.

406500813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166944 (or 166941 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 406500813 is about 20161.8653154910. The cubic root of 406500813 is about 740.7764026744.

The spelling of 406500813 in words is "four hundred six million, five hundred thousand, eight hundred thirteen".