20065573 has 4 divisors (see below), whose sum is σ = 21889728. Its totient is φ = 18241420.

The previous prime is 20065553. The next prime is 20065597. The reversal of 20065573 is 37556002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20065573 - 2⁵ = 20065541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20065553) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 912061 + ... + 912082.

It is an arithmetic number, because the mean of its divisors is an integer number (5472432).

Almost surely, 2^20065573 is an apocalyptic number.

It is an amenable number.

20065573 is a deficient number, since it is larger than the sum of its proper divisors (1824155).

20065573 is a wasteful number, since it uses less digits than its factorization.

20065573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824154.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 20065573 is about 4479.4612399261. The cubic root of 20065573 is about 271.7380922176.

The spelling of 20065573 in words is "twenty million, sixty-five thousand, five hundred seventy-three".