6507649 has 2 divisors, whose sum is σ = 6507650. Its totient is φ = 6507648.

The previous prime is 6507623. The next prime is 6507661. The reversal of 6507649 is 9467056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5856400 + 651249 = 2420^2 + 807^2 .

It is a cyclic number.

It is not a de Polignac number, because 6507649 - 2⁷ = 6507521 is a prime.

It is not a weakly prime, because it can be changed into another prime (6507619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3253824 + 3253825.

It is an arithmetic number, because the mean of its divisors is an integer number (3253825).

Almost surely, 2^6507649 is an apocalyptic number.

It is an amenable number.

6507649 is a deficient number, since it is larger than the sum of its proper divisors (1).

6507649 is an equidigital number, since it uses as much as digits as its factorization.

6507649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 6507649 is about 2551.0094080579. The cubic root of 6507649 is about 186.6987342158.

The spelling of 6507649 in words is "six million, five hundred seven thousand, six hundred forty-nine".