6491747 has 2 divisors, whose sum is σ = 6491748. Its totient is φ = 6491746.

The previous prime is 6491731. The next prime is 6491759. The reversal of 6491747 is 7471946.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6491747 - 2⁴ = 6491731 is a prime.

It is a super-2 number, since 2×6491747² = 84285558224018, which contains 22 as substring.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 6491747.

It is not a weakly prime, because it can be changed into another prime (6491707) 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, 3245873 + 3245874.

It is an arithmetic number, because the mean of its divisors is an integer number (3245874).

Almost surely, 2^6491747 is an apocalyptic number.

6491747 is a deficient number, since it is larger than the sum of its proper divisors (1).

6491747 is an equidigital number, since it uses as much as digits as its factorization.

6491747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 38.

The square root of 6491747 is about 2547.8906962427. The cubic root of 6491747 is about 186.5465387097.

The spelling of 6491747 in words is "six million, four hundred ninety-one thousand, seven hundred forty-seven".