165213704 has 16 divisors (see below), whose sum is σ = 310016700. Its totient is φ = 82542592.

The previous prime is 165213691. The next prime is 165213739. The reversal of 165213704 is 407312561.

It can be written as a sum of positive squares in 2 ways, for example, as 165122500 + 91204 = 12850^2 + 302^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3944 + ... + 18600.

Almost surely, 2^165213704 is an apocalyptic number.

It is an amenable number.

165213704 is a deficient number, since it is larger than the sum of its proper divisors (144802996).

165213704 is a wasteful number, since it uses less digits than its factorization.

165213704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16072 (or 16068 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 165213704 is about 12853.5483038731. The cubic root of 165213704 is about 548.7173460367.

The spelling of 165213704 in words is "one hundred sixty-five million, two hundred thirteen thousand, seven hundred four".