6495681 has 16 divisors (see below), whose sum is σ = 9028800. Its totient is φ = 4148928.

The previous prime is 6495679. The next prime is 6495721. The reversal of 6495681 is 1865946.

It is not a de Polignac number, because 6495681 - 2¹ = 6495679 is a prime.

It is a super-2 number, since 2×6495681² = 84387743307522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6495641) 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 15 ways as a sum of consecutive naturals, for example, 16950 + ... + 17328.

It is an arithmetic number, because the mean of its divisors is an integer number (564300).

Almost surely, 2^6495681 is an apocalyptic number.

It is an amenable number.

6495681 is a deficient number, since it is larger than the sum of its proper divisors (2533119).

6495681 is a wasteful number, since it uses less digits than its factorization.

6495681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608.

The product of its digits is 51840, while the sum is 39.

The square root of 6495681 is about 2548.6625904580. The cubic root of 6495681 is about 186.5842135138.

The spelling of 6495681 in words is "six million, four hundred ninety-five thousand, six hundred eighty-one".