400605606 has 24 divisors (see below), whose sum is σ = 869521224. Its totient is φ = 133297920.

The previous prime is 400605599. The next prime is 400605613. The reversal of 400605606 is 606506004.

400605606 is a `hidden beast` number, since 40 + 0 + 60 + 560 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (400605599) and next prime (400605613).

It is a self number, because there is not a number n which added to its sum of digits gives 400605606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9211 + ... + 29766.

It is an arithmetic number, because the mean of its divisors is an integer number (36230051).

Almost surely, 2^400605606 is an apocalyptic number.

400605606 is an abundant number, since it is smaller than the sum of its proper divisors (468915618).

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

400605606 is a wasteful number, since it uses less digits than its factorization.

400605606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39556 (or 39553 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 400605606 is about 20015.1344237305. The cubic root of 400605606 is about 737.1779574893.

The spelling of 400605606 in words is "four hundred million, six hundred five thousand, six hundred six".