6665497 has 2 divisors, whose sum is σ = 6665498. Its totient is φ = 6665496.

The previous prime is 6665437. The next prime is 6665537. The reversal of 6665497 is 7945666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6330256 + 335241 = 2516^2 + 579^2 .

It is a cyclic number.

It is not a de Polignac number, because 6665497 - 2⁷ = 6665369 is a prime.

It is not a weakly prime, because it can be changed into another prime (6665437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332748 + 3332749.

It is an arithmetic number, because the mean of its divisors is an integer number (3332749).

Almost surely, 2^6665497 is an apocalyptic number.

It is an amenable number.

6665497 is a deficient number, since it is larger than the sum of its proper divisors (1).

6665497 is an equidigital number, since it uses as much as digits as its factorization.

6665497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 43.

The square root of 6665497 is about 2581.7623825596. The cubic root of 6665497 is about 188.1961981477.

The spelling of 6665497 in words is "six million, six hundred sixty-five thousand, four hundred ninety-seven".