20066613 has 16 divisors (see below), whose sum is σ = 32376960. Its totient is φ = 10791936.

The previous prime is 20066611. The next prime is 20066623. The reversal of 20066613 is 31666002.

It is not a de Polignac number, because 20066613 - 2¹ = 20066611 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 (20066611) 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 15 ways as a sum of consecutive naturals, for example, 27748 + ... + 28461.

It is an arithmetic number, because the mean of its divisors is an integer number (2023560).

Almost surely, 2^20066613 is an apocalyptic number.

It is an amenable number.

20066613 is a deficient number, since it is larger than the sum of its proper divisors (12310347).

20066613 is a wasteful number, since it uses less digits than its factorization.

20066613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56236.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 20066613 is about 4479.5773238108. The cubic root of 20066613 is about 271.7427868711.

The spelling of 20066613 in words is "twenty million, sixty-six thousand, six hundred thirteen".