6791638 has 16 divisors (see below), whose sum is σ = 11731104. Its totient is φ = 2888640.

The previous prime is 6791623. The next prime is 6791677. The reversal of 6791638 is 8361976.

It is a super-2 number, since 2×6791638² = 92252693446088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6791638.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148 + ... + 3688.

It is an arithmetic number, because the mean of its divisors is an integer number (733194).

Almost surely, 2^6791638 is an apocalyptic number.

6791638 is a deficient number, since it is larger than the sum of its proper divisors (4939466).

6791638 is a wasteful number, since it uses less digits than its factorization.

6791638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3687.

The product of its digits is 54432, while the sum is 40.

The square root of 6791638 is about 2606.0771285593. The cubic root of 6791638 is about 189.3759581619.

The spelling of 6791638 in words is "six million, seven hundred ninety-one thousand, six hundred thirty-eight".