20673347 has 2 divisors, whose sum is σ = 20673348. Its totient is φ = 20673346.

The previous prime is 20673329. The next prime is 20673361. The reversal of 20673347 is 74337602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20673347 - 2¹² = 20669251 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20673397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10336673 + 10336674.

It is an arithmetic number, because the mean of its divisors is an integer number (10336674).

Almost surely, 2^20673347 is an apocalyptic number.

20673347 is a deficient number, since it is larger than the sum of its proper divisors (1).

20673347 is an equidigital number, since it uses as much as digits as its factorization.

20673347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 32.

The square root of 20673347 is about 4546.7952450050. The cubic root of 20673347 is about 274.4544423804.

The spelling of 20673347 in words is "twenty million, six hundred seventy-three thousand, three hundred forty-seven".