505541646 has 24 divisors (see below), whose sum is σ = 1098405360. Its totient is φ = 168042336.

The previous prime is 505541639. The next prime is 505541671. The reversal of 505541646 is 646145505.

505541646 is a `hidden beast` number, since 5 + 0 + 5 + 5 + 4 + 1 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 505541646.

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, 32655 + ... + 45578.

It is an arithmetic number, because the mean of its divisors is an integer number (45766890).

Almost surely, 2^505541646 is an apocalyptic number.

505541646 is an abundant number, since it is smaller than the sum of its proper divisors (592863714).

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

505541646 is a wasteful number, since it uses less digits than its factorization.

505541646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78600 (or 78597 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 505541646 is about 22484.2532898026. The cubic root of 505541646 is about 796.6220306880.

The spelling of 505541646 in words is "five hundred five million, five hundred forty-one thousand, six hundred forty-six".