406506660 has 48 divisors (see below), whose sum is σ = 1300822656. Its totient is φ = 92915712.

The previous prime is 406506643. The next prime is 406506731. The reversal of 406506660 is 66605604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 483517 + ... + 484356.

It is an arithmetic number, because the mean of its divisors is an integer number (27100472).

Almost surely, 2^406506660 is an apocalyptic number.

It is an amenable number.

406506660 is an abundant number, since it is smaller than the sum of its proper divisors (894315996).

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

406506660 is a wasteful number, since it uses less digits than its factorization.

406506660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967892 (or 967890 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 406506660 is about 20162.0103164342. The cubic root of 406506660 is about 740.7799543679.

The spelling of 406506660 in words is "four hundred six million, five hundred six thousand, six hundred sixty".