406815066 has 96 divisors (see below), whose sum is σ = 1072206720. Its totient is φ = 108822528.

The previous prime is 406815011. The next prime is 406815091. The reversal of 406815066 is 660518604.

It is a self number, because there is not a number n which added to its sum of digits gives 406815066.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 550125 + ... + 550863.

It is an arithmetic number, because the mean of its divisors is an integer number (11168820).

Almost surely, 2^406815066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 406815066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (536103360).

406815066 is an abundant number, since it is smaller than the sum of its proper divisors (665391654).

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

406815066 is a wasteful number, since it uses less digits than its factorization.

406815066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028 (or 1025 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 406815066 is about 20169.6570620326. The cubic root of 406815066 is about 740.9672438218.

The spelling of 406815066 in words is "four hundred six million, eight hundred fifteen thousand, sixty-six".