406066220 has 48 divisors (see below), whose sum is σ = 976926720. Its totient is φ = 138884544.

The previous prime is 406066217. The next prime is 406066237. The reversal of 406066220 is 22660604.

It is a self number, because there is not a number n which added to its sum of digits gives 406066220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58157 + ... + 64763.

It is an arithmetic number, because the mean of its divisors is an integer number (20352640).

Almost surely, 2^406066220 is an apocalyptic number.

It is an amenable number.

406066220 is an abundant number, since it is smaller than the sum of its proper divisors (570860500).

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

406066220 is a wasteful number, since it uses less digits than its factorization.

406066220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7062 (or 7060 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 406066220 is about 20151.0848343210. The cubic root of 406066220 is about 740.5123187126.

The spelling of 406066220 in words is "four hundred six million, sixty-six thousand, two hundred twenty".