6497668 has 6 divisors (see below), whose sum is σ = 11370926. Its totient is φ = 3248832.

The previous prime is 6497591. The next prime is 6497683. The reversal of 6497668 is 8667946.

It can be written as a sum of positive squares in only one way, i.e., 6110784 + 386884 = 2472^2 + 622^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812205 + ... + 812212.

Almost surely, 2^6497668 is an apocalyptic number.

It is an amenable number.

6497668 is a deficient number, since it is larger than the sum of its proper divisors (4873258).

6497668 is a wasteful number, since it uses less digits than its factorization.

6497668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624421 (or 1624419 counting only the distinct ones).

The product of its digits is 435456, while the sum is 46.

The square root of 6497668 is about 2549.0523729418. The cubic root of 6497668 is about 186.6032366687.

The spelling of 6497668 in words is "six million, four hundred ninety-seven thousand, six hundred sixty-eight".