20173065 has 32 divisors (see below), whose sum is σ = 35582976. Its totient is φ = 9677760.

The previous prime is 20173051. The next prime is 20173081. The reversal of 20173065 is 56037102.

It is not a de Polignac number, because 20173065 - 2¹¹ = 20171017 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16402 + ... + 17588.

It is an arithmetic number, because the mean of its divisors is an integer number (1111968).

Almost surely, 2^20173065 is an apocalyptic number.

It is an amenable number.

20173065 is a deficient number, since it is larger than the sum of its proper divisors (15409911).

20173065 is a wasteful number, since it uses less digits than its factorization.

20173065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 20173065 is about 4491.4435318726. The cubic root of 20173065 is about 272.2224652380. Note that the first 3 decimals are identical.

The spelling of 20173065 in words is "twenty million, one hundred seventy-three thousand, sixty-five".