6779538 has 20 divisors (see below), whose sum is σ = 15191550. Its totient is φ = 2259792.

The previous prime is 6779537. The next prime is 6779557. The reversal of 6779538 is 8359776.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4782969 + 1996569 = 2187^2 + 1413^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6779493 and 6779502.

It is not an unprimeable number, because it can be changed into a prime (6779537) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 20763 + ... + 21086.

Almost surely, 2^6779538 is an apocalyptic number.

6779538 is an abundant number, since it is smaller than the sum of its proper divisors (8412012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6779538 is a wasteful number, since it uses less digits than its factorization.

6779538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41863 (or 41854 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 6779538 is about 2603.7545967314. The cubic root of 6779538 is about 189.2634270730.

The spelling of 6779538 in words is "six million, seven hundred seventy-nine thousand, five hundred thirty-eight".