16065881 has 16 divisors (see below), whose sum is σ = 17977344. Its totient is φ = 14261184.

The previous prime is 16065871. The next prime is 16065883. The reversal of 16065881 is 18856061.

It is a cyclic number.

It is not a de Polignac number, because 16065881 - 2⁶ = 16065817 is a prime.

It is a super-2 number, since 2×16065881² = 516225064612322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16065883) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 60956 + ... + 61218.

It is an arithmetic number, because the mean of its divisors is an integer number (1123584).

Almost surely, 2^16065881 is an apocalyptic number.

It is an amenable number.

16065881 is a deficient number, since it is larger than the sum of its proper divisors (1911463).

16065881 is a wasteful number, since it uses less digits than its factorization.

16065881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 16065881 is about 4008.2266652474. The cubic root of 16065881 is about 252.3295899485.

The spelling of 16065881 in words is "sixteen million, sixty-five thousand, eight hundred eighty-one".