6497638 has 32 divisors (see below), whose sum is σ = 12317184. Its totient is φ = 2504832.

The previous prime is 6497591. The next prime is 6497683. The reversal of 6497638 is 8367946.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6497594 and 6497603.

It is a congruent number.

It is an unprimeable number.

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, 4881 + ... + 6067.

It is an arithmetic number, because the mean of its divisors is an integer number (384912).

Almost surely, 2^6497638 is an apocalyptic number.

6497638 is a deficient number, since it is larger than the sum of its proper divisors (5819546).

6497638 is a wasteful number, since it uses less digits than its factorization.

6497638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236.

The product of its digits is 217728, while the sum is 43.

The square root of 6497638 is about 2549.0464883952. The cubic root of 6497638 is about 186.6029494833.

The spelling of 6497638 in words is "six million, four hundred ninety-seven thousand, six hundred thirty-eight".