20683307 has 2 divisors, whose sum is σ = 20683308. Its totient is φ = 20683306.

The previous prime is 20683297. The next prime is 20683349. The reversal of 20683307 is 70338602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20683307 - 2¹⁶ = 20617771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20683307.

It is not a weakly prime, because it can be changed into another prime (20683367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10341653 + 10341654.

It is an arithmetic number, because the mean of its divisors is an integer number (10341654).

Almost surely, 2^20683307 is an apocalyptic number.

20683307 is a deficient number, since it is larger than the sum of its proper divisors (1).

20683307 is an equidigital number, since it uses as much as digits as its factorization.

20683307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 20683307 is about 4547.8903900600. The cubic root of 20683307 is about 274.4985108352.

The spelling of 20683307 in words is "twenty million, six hundred eighty-three thousand, three hundred seven".