7648609 has 2 divisors, whose sum is σ = 7648610. Its totient is φ = 7648608.

The previous prime is 7648559. The next prime is 7648633. The reversal of 7648609 is 9068467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6275025 + 1373584 = 2505^2 + 1172^2 .

It is a cyclic number.

It is not a de Polignac number, because 7648609 - 2⁷ = 7648481 is a prime.

It is not a weakly prime, because it can be changed into another prime (7648649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3824304 + 3824305.

It is an arithmetic number, because the mean of its divisors is an integer number (3824305).

Almost surely, 2^7648609 is an apocalyptic number.

It is an amenable number.

7648609 is a deficient number, since it is larger than the sum of its proper divisors (1).

7648609 is an equidigital number, since it uses as much as digits as its factorization.

7648609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 7648609 is about 2765.6118672005. The cubic root of 7648609 is about 197.0277903197.

The spelling of 7648609 in words is "seven million, six hundred forty-eight thousand, six hundred nine".