20568713 has 8 divisors (see below), whose sum is σ = 22478016. Its totient is φ = 18666000.

The previous prime is 20568689. The next prime is 20568721. The reversal of 20568713 is 31786502.

It is a happy number.

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 20568713 - 2⁶ = 20568649 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20568713.

It is not an unprimeable number, because it can be changed into a prime (20568733) 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 7 ways as a sum of consecutive naturals, for example, 6788 + ... + 9338.

It is an arithmetic number, because the mean of its divisors is an integer number (2809752).

Almost surely, 2^20568713 is an apocalyptic number.

It is an amenable number.

20568713 is a deficient number, since it is larger than the sum of its proper divisors (1909303).

20568713 is a wasteful number, since it uses less digits than its factorization.

20568713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3295.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 20568713 is about 4535.2743026194. The cubic root of 20568713 is about 273.9906269548.

The spelling of 20568713 in words is "twenty million, five hundred sixty-eight thousand, seven hundred thirteen".