165705044 has 36 divisors (see below), whose sum is σ = 304639104. Its totient is φ = 78780000.

The previous prime is 165705037. The next prime is 165705049. The reversal of 165705044 is 440507561.

It is a self number, because there is not a number n which added to its sum of digits gives 165705044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165705049) 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 11 ways as a sum of consecutive naturals, for example, 1264859 + ... + 1264989.

Almost surely, 2^165705044 is an apocalyptic number.

It is an amenable number.

165705044 is a deficient number, since it is larger than the sum of its proper divisors (138934060).

165705044 is a wasteful number, since it uses less digits than its factorization.

165705044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 165705044 is about 12872.6471248147. The cubic root of 165705044 is about 549.2607633356.

The spelling of 165705044 in words is "one hundred sixty-five million, seven hundred five thousand, forty-four".