405005606 has 8 divisors (see below), whose sum is σ = 615830664. Its totient is φ = 199728720.

The previous prime is 405005591. The next prime is 405005609. The reversal of 405005606 is 606500504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405005609) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1386860 + ... + 1387151.

It is an arithmetic number, because the mean of its divisors is an integer number (76978833).

Almost surely, 2^405005606 is an apocalyptic number.

405005606 is a deficient number, since it is larger than the sum of its proper divisors (210825058).

405005606 is a wasteful number, since it uses less digits than its factorization.

405005606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774086.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 405005606 is about 20124.7510792059. The cubic root of 405005606 is about 739.8670360081.

The spelling of 405005606 in words is "four hundred five million, five thousand, six hundred six".