20364065 has 4 divisors (see below), whose sum is σ = 24436884. Its totient is φ = 16291248.

The previous prime is 20364037. The next prime is 20364073. The reversal of 20364065 is 56046302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10975969 + 9388096 = 3313^2 + 3064^2 .

It is a cyclic number.

It is not a de Polignac number, because 20364065 - 2¹⁴ = 20347681 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2036402 + ... + 2036411.

It is an arithmetic number, because the mean of its divisors is an integer number (6109221).

Almost surely, 2^20364065 is an apocalyptic number.

It is an amenable number.

20364065 is a deficient number, since it is larger than the sum of its proper divisors (4072819).

20364065 is an equidigital number, since it uses as much as digits as its factorization.

20364065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4072818.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 20364065 is about 4512.6560914832. The cubic root of 20364065 is about 273.0789084337.

The spelling of 20364065 in words is "twenty million, three hundred sixty-four thousand, sixty-five".