406645466 has 16 divisors (see below), whose sum is σ = 627456456. Its totient is φ = 197510976.

The previous prime is 406645433. The next prime is 406645489. The reversal of 406645466 is 664546604.

It can be written as a sum of positive squares in 4 ways, for example, as 337273225 + 69372241 = 18365^2 + 8329^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46040 + ... + 54156.

Almost surely, 2^406645466 is an apocalyptic number.

406645466 is a deficient number, since it is larger than the sum of its proper divisors (220810990).

406645466 is a wasteful number, since it uses less digits than its factorization.

406645466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8833.

The product of its (nonzero) digits is 414720, while the sum is 41.

The square root of 406645466 is about 20165.4522885057. The cubic root of 406645466 is about 740.8642604906.

The spelling of 406645466 in words is "four hundred six million, six hundred forty-five thousand, four hundred sixty-six".