20600947 has 2 divisors, whose sum is σ = 20600948. Its totient is φ = 20600946.

The previous prime is 20600911. The next prime is 20600969. The reversal of 20600947 is 74900602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20600947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20600977) 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 as a sum of consecutive naturals, namely, 10300473 + 10300474.

It is an arithmetic number, because the mean of its divisors is an integer number (10300474).

Almost surely, 2^20600947 is an apocalyptic number.

20600947 is a deficient number, since it is larger than the sum of its proper divisors (1).

20600947 is an equidigital number, since it uses as much as digits as its factorization.

20600947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 20600947 is about 4538.8266104798. The cubic root of 20600947 is about 274.1336792422.

The spelling of 20600947 in words is "twenty million, six hundred thousand, nine hundred forty-seven".