9721067 has 2 divisors, whose sum is σ = 9721068. Its totient is φ = 9721066.

The previous prime is 9721039. The next prime is 9721069. The reversal of 9721067 is 7601279.

9721067 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9721067 - 2¹⁰ = 9720043 is a prime.

Together with 9721069, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9721069) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4860533 + 4860534.

It is an arithmetic number, because the mean of its divisors is an integer number (4860534).

Almost surely, 2^9721067 is an apocalyptic number.

9721067 is a deficient number, since it is larger than the sum of its proper divisors (1).

9721067 is an equidigital number, since it uses as much as digits as its factorization.

9721067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 9721067 is about 3117.8625691329. The cubic root of 9721067 is about 213.4214070478.

The spelling of 9721067 in words is "nine million, seven hundred twenty-one thousand, sixty-seven".