6495491 has 2 divisors, whose sum is σ = 6495492. Its totient is φ = 6495490.

The previous prime is 6495481. The next prime is 6495509. The reversal of 6495491 is 1945946.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6495491 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (6495421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3247745 + 3247746.

It is an arithmetic number, because the mean of its divisors is an integer number (3247746).

Almost surely, 2^6495491 is an apocalyptic number.

6495491 is a deficient number, since it is larger than the sum of its proper divisors (1).

6495491 is an equidigital number, since it uses as much as digits as its factorization.

6495491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 38.

The square root of 6495491 is about 2548.6253157340. The cubic root of 6495491 is about 186.5823942873.

The spelling of 6495491 in words is "six million, four hundred ninety-five thousand, four hundred ninety-one".