165006985 has 16 divisors (see below), whose sum is σ = 232626240. Its totient is φ = 110773440.

The previous prime is 165006977. The next prime is 165007067. The reversal of 165006985 is 589600561.

It is not a de Polignac number, because 165006985 - 2³ = 165006977 is a prime.

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, 114675 + ... + 116104.

It is an arithmetic number, because the mean of its divisors is an integer number (14539140).

Almost surely, 2^165006985 is an apocalyptic number.

It is an amenable number.

165006985 is a deficient number, since it is larger than the sum of its proper divisors (67619255).

165006985 is a wasteful number, since it uses less digits than its factorization.

165006985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230808.

The product of its (nonzero) digits is 64800, while the sum is 40.

The square root of 165006985 is about 12845.5044665439. The cubic root of 165006985 is about 548.4883948055.

The spelling of 165006985 in words is "one hundred sixty-five million, six thousand, nine hundred eighty-five".