6497663 has 4 divisors (see below), whose sum is σ = 6503640. Its totient is φ = 6491688.

The previous prime is 6497591. The next prime is 6497683. The reversal of 6497663 is 3667946.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6497663 - 2¹⁸ = 6235519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6497663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6497683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845 + ... + 3702.

It is an arithmetic number, because the mean of its divisors is an integer number (1625910).

Almost surely, 2^6497663 is an apocalyptic number.

6497663 is a deficient number, since it is larger than the sum of its proper divisors (5977).

6497663 is a wasteful number, since it uses less digits than its factorization.

6497663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5976.

The product of its digits is 163296, while the sum is 41.

The square root of 6497663 is about 2549.0513921849. The cubic root of 6497663 is about 186.6031888045.

The spelling of 6497663 in words is "six million, four hundred ninety-seven thousand, six hundred sixty-three".