165605322 has 16 divisors (see below), whose sum is σ = 331336800. Its totient is φ = 55180752.

The previous prime is 165605269. The next prime is 165605339. The reversal of 165605322 is 223506561.

It is a self number, because there is not a number n which added to its sum of digits gives 165605322.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27888 + ... + 33300.

It is an arithmetic number, because the mean of its divisors is an integer number (20708550).

Almost surely, 2^165605322 is an apocalyptic number.

165605322 is an abundant number, since it is smaller than the sum of its proper divisors (165731478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165605322 is a wasteful number, since it uses less digits than its factorization.

165605322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10517.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 165605322 is about 12868.7731349962. The cubic root of 165605322 is about 549.1505587379.

The spelling of 165605322 in words is "one hundred sixty-five million, six hundred five thousand, three hundred twenty-two".