162661806 has 12 divisors (see below), whose sum is σ = 352433952. Its totient is φ = 54220596.

The previous prime is 162661787. The next prime is 162661817. The reversal of 162661806 is 608166261.

162661806 is a `hidden beast` number, since 16 + 26 + 618 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 4518366 + ... + 4518401.

It is an arithmetic number, because the mean of its divisors is an integer number (29369496).

Almost surely, 2^162661806 is an apocalyptic number.

162661806 is an abundant number, since it is smaller than the sum of its proper divisors (189772146).

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

162661806 is a wasteful number, since it uses less digits than its factorization.

162661806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9036775 (or 9036772 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 162661806 is about 12753.8937583783. The cubic root of 162661806 is about 545.8775034136.

The spelling of 162661806 in words is "one hundred sixty-two million, six hundred sixty-one thousand, eight hundred six".