6779638 has 16 divisors (see below), whose sum is σ = 10745856. Its totient is φ = 3202920.

The previous prime is 6779629. The next prime is 6779639. The reversal of 6779638 is 8369776.

It is a super-2 number, since 2×6779638² = 91926982822088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6779639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1395 + ... + 3937.

It is an arithmetic number, because the mean of its divisors is an integer number (671616).

Almost surely, 2^6779638 is an apocalyptic number.

6779638 is a deficient number, since it is larger than the sum of its proper divisors (3966218).

6779638 is a wasteful number, since it uses less digits than its factorization.

6779638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619.

The product of its digits is 381024, while the sum is 46.

The square root of 6779638 is about 2603.7737996992. The cubic root of 6779638 is about 189.2643576305.

The spelling of 6779638 in words is "six million, seven hundred seventy-nine thousand, six hundred thirty-eight".