6416749 has 2 divisors, whose sum is σ = 6416750. Its totient is φ = 6416748.

The previous prime is 6416741. The next prime is 6416759. The reversal of 6416749 is 9476146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5846724 + 570025 = 2418^2 + 755^2 .

It is a cyclic number.

It is not a de Polignac number, because 6416749 - 2³ = 6416741 is a prime.

6416749 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6416741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3208374 + 3208375.

It is an arithmetic number, because the mean of its divisors is an integer number (3208375).

Almost surely, 2^6416749 is an apocalyptic number.

It is an amenable number.

6416749 is a deficient number, since it is larger than the sum of its proper divisors (1).

6416749 is an equidigital number, since it uses as much as digits as its factorization.

6416749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 6416749 is about 2533.1302769498. The cubic root of 6416749 is about 185.8253747030.

The spelling of 6416749 in words is "six million, four hundred sixteen thousand, seven hundred forty-nine".