6791780 has 12 divisors (see below), whose sum is σ = 14262780. Its totient is φ = 2716704.

The previous prime is 6791779. The next prime is 6791783. The reversal of 6791780 is 871976.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 906304 + 5885476 = 952^2 + 2426^2 .

It is a super-2 number, since 2×6791780² = 92256551136800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6791783) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 169775 + ... + 169814.

It is an arithmetic number, because the mean of its divisors is an integer number (1188565).

Almost surely, 2^6791780 is an apocalyptic number.

It is an amenable number.

6791780 is an abundant number, since it is smaller than the sum of its proper divisors (7471000).

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

6791780 is a wasteful number, since it uses less digits than its factorization.

6791780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339598 (or 339596 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 6791780 is about 2606.1043724302. The cubic root of 6791780 is about 189.3772779809.

The spelling of 6791780 in words is "six million, seven hundred ninety-one thousand, seven hundred eighty".