161206585 has 16 divisors (see below), whose sum is σ = 197395200. Its totient is φ = 126349056.

The previous prime is 161206579. The next prime is 161206607. The reversal of 161206585 is 585602161.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 161206585 - 2⁵ = 161206553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161206585.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107521 + ... + 109009.

It is an arithmetic number, because the mean of its divisors is an integer number (12337200).

Almost surely, 2^161206585 is an apocalyptic number.

It is an amenable number.

161206585 is a deficient number, since it is larger than the sum of its proper divisors (36188615).

161206585 is a wasteful number, since it uses less digits than its factorization.

161206585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 161206585 is about 12696.7155201650. The cubic root of 161206585 is about 544.2447637478.

The spelling of 161206585 in words is "one hundred sixty-one million, two hundred six thousand, five hundred eighty-five".