6504749 has 2 divisors, whose sum is σ = 6504750. Its totient is φ = 6504748.

The previous prime is 6504737. The next prime is 6504763. The reversal of 6504749 is 9474056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3553225 + 2951524 = 1885^2 + 1718^2 .

It is a cyclic number.

It is not a de Polignac number, because 6504749 - 2⁸ = 6504493 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 (6504769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3252374 + 3252375.

It is an arithmetic number, because the mean of its divisors is an integer number (3252375).

Almost surely, 2^6504749 is an apocalyptic number.

It is an amenable number.

6504749 is a deficient number, since it is larger than the sum of its proper divisors (1).

6504749 is an equidigital number, since it uses as much as digits as its factorization.

6504749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 6504749 is about 2550.4409422686. The cubic root of 6504749 is about 186.6709972776.

The spelling of 6504749 in words is "six million, five hundred four thousand, seven hundred forty-nine".