6495813 has 12 divisors (see below), whose sum is σ = 9417408. Its totient is φ = 4314600.

The previous prime is 6495809. The next prime is 6495847. The reversal of 6495813 is 3185946.

6495813 is a `hidden beast` number, since 649 + 5 + 8 + 1 + 3 = 666.

It is not a de Polignac number, because 6495813 - 2² = 6495809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6495803) 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 in 11 ways as a sum of consecutive naturals, for example, 1588 + ... + 3938.

It is an arithmetic number, because the mean of its divisors is an integer number (784784).

Almost surely, 2^6495813 is an apocalyptic number.

It is an amenable number.

6495813 is a deficient number, since it is larger than the sum of its proper divisors (2921595).

6495813 is a wasteful number, since it uses less digits than its factorization.

6495813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664 (or 2661 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 6495813 is about 2548.6884862611. The cubic root of 6495813 is about 186.5854773767.

The spelling of 6495813 in words is "six million, four hundred ninety-five thousand, eight hundred thirteen".