165420704 has 12 divisors (see below), whose sum is σ = 325672074. Its totient is φ = 82710336.

The previous prime is 165420653. The next prime is 165420733. The reversal of 165420704 is 407024561.

It can be written as a sum of positive squares in only one way, i.e., 155052304 + 10368400 = 12452^2 + 3220^2 .

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 as a sum of consecutive naturals, namely, 2584667 + ... + 2584730.

Almost surely, 2^165420704 is an apocalyptic number.

It is an amenable number.

165420704 is a deficient number, since it is larger than the sum of its proper divisors (160251370).

165420704 is an equidigital number, since it uses as much as digits as its factorization.

165420704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5169407 (or 5169399 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 165420704 is about 12861.5980344590. The cubic root of 165420704 is about 548.9464171999.

The spelling of 165420704 in words is "one hundred sixty-five million, four hundred twenty thousand, seven hundred four".