7648009 has 2 divisors, whose sum is σ = 7648010. Its totient is φ = 7648008.

The previous prime is 7648001. The next prime is 7648019. The reversal of 7648009 is 9008467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6375625 + 1272384 = 2525^2 + 1128^2 .

It is a cyclic number.

It is not a de Polignac number, because 7648009 - 2³ = 7648001 is a prime.

It is not a weakly prime, because it can be changed into another prime (7648001) 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, 3824004 + 3824005.

It is an arithmetic number, because the mean of its divisors is an integer number (3824005).

Almost surely, 2^7648009 is an apocalyptic number.

It is an amenable number.

7648009 is a deficient number, since it is larger than the sum of its proper divisors (1).

7648009 is an equidigital number, since it uses as much as digits as its factorization.

7648009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 7648009 is about 2765.5033899817. The cubic root of 7648009 is about 197.0226381948.

The spelling of 7648009 in words is "seven million, six hundred forty-eight thousand, nine".