20796947 has 2 divisors, whose sum is σ = 20796948. Its totient is φ = 20796946.

The previous prime is 20796943. The next prime is 20796959. The reversal of 20796947 is 74969702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20796947 - 2² = 20796943 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20796898 and 20796907.

It is not a weakly prime, because it can be changed into another prime (20796943) 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, 10398473 + 10398474.

It is an arithmetic number, because the mean of its divisors is an integer number (10398474).

Almost surely, 2^20796947 is an apocalyptic number.

20796947 is a deficient number, since it is larger than the sum of its proper divisors (1).

20796947 is an equidigital number, since it uses as much as digits as its factorization.

20796947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 20796947 is about 4560.3669808470. The cubic root of 20796947 is about 275.0003173550. Note that the first 3 decimals are identical.

The spelling of 20796947 in words is "twenty million, seven hundred ninety-six thousand, nine hundred forty-seven".