20322065 has 8 divisors (see below), whose sum is σ = 25045800. Its totient is φ = 15818112.

The previous prime is 20322061. The next prime is 20322073. The reversal of 20322065 is 56022302.

It is a happy number.

It is a Cunningham number, because it is equal to 4508²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1926544 + 18395521 = 1388^2 + 4289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20322065 - 2² = 20322061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20322061) 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 7 ways as a sum of consecutive naturals, for example, 54740 + ... + 55109.

It is an arithmetic number, because the mean of its divisors is an integer number (3130725).

Almost surely, 2^20322065 is an apocalyptic number.

It is an amenable number.

20322065 is a deficient number, since it is larger than the sum of its proper divisors (4723735).

20322065 is a wasteful number, since it uses less digits than its factorization.

20322065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109891.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20322065 is about 4508.0001109139. Note that the first 3 decimals coincide. The cubic root of 20322065 is about 272.8910414208.

Adding to 20322065 its reverse (56022302), we get a palindrome (76344367).

The spelling of 20322065 in words is "twenty million, three hundred twenty-two thousand, sixty-five".