6477491 has 2 divisors, whose sum is σ = 6477492. Its totient is φ = 6477490.

The previous prime is 6477487. The next prime is 6477503. The reversal of 6477491 is 1947746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6477491 - 2² = 6477487 is a prime.

It is not a weakly prime, because it can be changed into another prime (6470491) 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, 3238745 + 3238746.

It is an arithmetic number, because the mean of its divisors is an integer number (3238746).

Almost surely, 2^6477491 is an apocalyptic number.

6477491 is a deficient number, since it is larger than the sum of its proper divisors (1).

6477491 is an equidigital number, since it uses as much as digits as its factorization.

6477491 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 6477491 is about 2545.0915504162. The cubic root of 6477491 is about 186.4098853796.

The spelling of 6477491 in words is "six million, four hundred seventy-seven thousand, four hundred ninety-one".