7069721 has 2 divisors, whose sum is σ = 7069722. Its totient is φ = 7069720.

The previous prime is 7069687. The next prime is 7069771. The reversal of 7069721 is 1279607.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6528025 + 541696 = 2555^2 + 736^2 .

It is a cyclic number.

It is not a de Polignac number, because 7069721 - 2¹⁰ = 7068697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7069771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3534860 + 3534861.

It is an arithmetic number, because the mean of its divisors is an integer number (3534861).

Almost surely, 2^7069721 is an apocalyptic number.

It is an amenable number.

7069721 is a deficient number, since it is larger than the sum of its proper divisors (1).

7069721 is an equidigital number, since it uses as much as digits as its factorization.

7069721 is an odious number, because the sum of its binary digits is odd.

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

The square root of 7069721 is about 2658.8946951694. The cubic root of 7069721 is about 191.9261235600.

The spelling of 7069721 in words is "seven million, sixty-nine thousand, seven hundred twenty-one".