6695021 has 2 divisors, whose sum is σ = 6695022. Its totient is φ = 6695020.

The previous prime is 6694999. The next prime is 6695041. The reversal of 6695021 is 1205966.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5221225 + 1473796 = 2285^2 + 1214^2 .

It is a cyclic number.

It is not a de Polignac number, because 6695021 - 2¹⁰ = 6693997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6695041) 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, 3347510 + 3347511.

It is an arithmetic number, because the mean of its divisors is an integer number (3347511).

Almost surely, 2^6695021 is an apocalyptic number.

It is an amenable number.

6695021 is a deficient number, since it is larger than the sum of its proper divisors (1).

6695021 is an equidigital number, since it uses as much as digits as its factorization.

6695021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 6695021 is about 2587.4738646023. The cubic root of 6695021 is about 188.4736528784.

The spelling of 6695021 in words is "six million, six hundred ninety-five thousand, twenty-one".