165660235 has 16 divisors (see below), whose sum is σ = 216800640. Its totient is φ = 120781440.

The previous prime is 165660169. The next prime is 165660307. The reversal of 165660235 is 532066561.

It is not a de Polignac number, because 165660235 - 2¹¹ = 165658187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165660235.

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, 10996 + ... + 21265.

It is an arithmetic number, because the mean of its divisors is an integer number (13550040).

Almost surely, 2^165660235 is an apocalyptic number.

165660235 is a deficient number, since it is larger than the sum of its proper divisors (51140405).

165660235 is a wasteful number, since it uses less digits than its factorization.

165660235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32358.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 165660235 is about 12870.9065337295. The cubic root of 165660235 is about 549.2112495656.

The spelling of 165660235 in words is "one hundred sixty-five million, six hundred sixty thousand, two hundred thirty-five".