165280670 has 16 divisors (see below), whose sum is σ = 303835968. Its totient is φ = 64705440.

The previous prime is 165280669. The next prime is 165280699. The reversal of 165280670 is 76082561.

It is a self number, because there is not a number n which added to its sum of digits gives 165280670.

It is a congruent number.

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, 175361 + ... + 176300.

It is an arithmetic number, because the mean of its divisors is an integer number (18989748).

Almost surely, 2^165280670 is an apocalyptic number.

165280670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165280670 is a deficient number, since it is larger than the sum of its proper divisors (138555298).

165280670 is a wasteful number, since it uses less digits than its factorization.

165280670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351715.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 165280670 is about 12856.1530015787. The cubic root of 165280670 is about 548.7914731447.

The spelling of 165280670 in words is "one hundred sixty-five million, two hundred eighty thousand, six hundred seventy".