6780337681 has 8 divisors (see below), whose sum is σ = 7731426024. Its totient is φ = 5890609920.

The previous prime is 6780337673. The next prime is 6780337691. The reversal of 6780337681 is 1867330876.

It can be written as a sum of positive squares in 4 ways, for example, as 2502000400 + 4278337281 = 50020^2 + 65409^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6780337681 - 2³ = 6780337673 is a prime.

It is a super-2 number, since 2×6780337681² = 91945958136776915522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6780337631) 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, 15339910 + ... + 15340351.

It is an arithmetic number, because the mean of its divisors is an integer number (966428253).

Almost surely, 2^6780337681 is an apocalyptic number.

It is an amenable number.

6780337681 is a deficient number, since it is larger than the sum of its proper divisors (951088343).

6780337681 is a wasteful number, since it uses less digits than its factorization.

6780337681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30680291.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The square root of 6780337681 is about 82342.8058849102. The cubic root of 6780337681 is about 1892.7086830847.

The spelling of 6780337681 in words is "six billion, seven hundred eighty million, three hundred thirty-seven thousand, six hundred eighty-one".