161706806 has 16 divisors (see below), whose sum is σ = 244999680. Its totient is φ = 80044200.

The previous prime is 161706799. The next prime is 161706817. The reversal of 161706806 is 608607161.

It is a super-2 number, since 2×161706806² = 52298182213443272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110105 + ... + 111563.

It is an arithmetic number, because the mean of its divisors is an integer number (15312480).

Almost surely, 2^161706806 is an apocalyptic number.

161706806 is a deficient number, since it is larger than the sum of its proper divisors (83292874).

161706806 is a wasteful number, since it uses less digits than its factorization.

161706806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 161706806 is about 12716.3990972287. The cubic root of 161706806 is about 544.8071095858.

The spelling of 161706806 in words is "one hundred sixty-one million, seven hundred six thousand, eight hundred six".