165668485 has 16 divisors (see below), whose sum is σ = 210870000. Its totient is φ = 124517376.

The previous prime is 165668453. The next prime is 165668501. The reversal of 165668485 is 584866561.

It can be written as a sum of positive squares in 8 ways, for example, as 18992164 + 146676321 = 4358^2 + 12111^2 .

It is a cyclic number.

It is not a de Polignac number, because 165668485 - 2⁵ = 165668453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58891 + ... + 61639.

It is an arithmetic number, because the mean of its divisors is an integer number (13179375).

Almost surely, 2^165668485 is an apocalyptic number.

It is an amenable number.

165668485 is a deficient number, since it is larger than the sum of its proper divisors (45201515).

165668485 is a wasteful number, since it uses less digits than its factorization.

165668485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480.

The product of its digits is 1382400, while the sum is 49.

The square root of 165668485 is about 12871.2270199853. The cubic root of 165668485 is about 549.2203664539.

The spelling of 165668485 in words is "one hundred sixty-five million, six hundred sixty-eight thousand, four hundred eighty-five".