406316646 has 12 divisors (see below), whose sum is σ = 880352772. Its totient is φ = 135438876.

The previous prime is 406316639. The next prime is 406316663. The reversal of 406316646 is 646613604.

406316646 is a `hidden beast` number, since 4 + 0 + 6 + 3 + 1 + 6 + 646 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 406316646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11286556 + ... + 11286591.

It is an arithmetic number, because the mean of its divisors is an integer number (73362731).

Almost surely, 2^406316646 is an apocalyptic number.

406316646 is an abundant number, since it is smaller than the sum of its proper divisors (474036126).

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

406316646 is a wasteful number, since it uses less digits than its factorization.

406316646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22573155 (or 22573152 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 406316646 is about 20157.2975867302. The cubic root of 406316646 is about 740.6645150951.

The spelling of 406316646 in words is "four hundred six million, three hundred sixteen thousand, six hundred forty-six".