20330613 has 12 divisors (see below), whose sum is σ = 29522688. Its totient is φ = 13481640.

The previous prime is 20330591. The next prime is 20330647. The reversal of 20330613 is 31603302.

It is a happy number.

20330613 is a `hidden beast` number, since 20 + 3 + 30 + 613 = 666.

It is not a de Polignac number, because 20330613 - 2⁵ = 20330581 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330683) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4195 + ... + 7632.

It is an arithmetic number, because the mean of its divisors is an integer number (2460224).

Almost surely, 2^20330613 is an apocalyptic number.

It is an amenable number.

20330613 is a deficient number, since it is larger than the sum of its proper divisors (9192075).

20330613 is a wasteful number, since it uses less digits than its factorization.

20330613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12024 (or 12021 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 20330613 is about 4508.9481034938. The cubic root of 20330613 is about 272.9292977961.

Adding to 20330613 its reverse (31603302), we get a palindrome (51933915).

The spelling of 20330613 in words is "twenty million, three hundred thirty thousand, six hundred thirteen".