6720697 has 2 divisors, whose sum is σ = 6720698. Its totient is φ = 6720696.

The previous prime is 6720691. The next prime is 6720719. The reversal of 6720697 is 7960276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3884841 + 2835856 = 1971^2 + 1684^2 .

It is a cyclic number.

It is not a de Polignac number, because 6720697 - 2¹⁹ = 6196409 is a prime.

It is not a weakly prime, because it can be changed into another prime (6720691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3360348 + 3360349.

It is an arithmetic number, because the mean of its divisors is an integer number (3360349).

Almost surely, 2^6720697 is an apocalyptic number.

It is an amenable number.

6720697 is a deficient number, since it is larger than the sum of its proper divisors (1).

6720697 is an equidigital number, since it uses as much as digits as its factorization.

6720697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 6720697 is about 2592.4307126710. The cubic root of 6720697 is about 188.7142832583.

The spelling of 6720697 in words is "six million, seven hundred twenty thousand, six hundred ninety-seven".