6780081 has 32 divisors (see below), whose sum is σ = 11520000. Its totient is φ = 3516240.

The previous prime is 6780077. The next prime is 6780083. The reversal of 6780081 is 1800876.

It is not a de Polignac number, because 6780081 - 2² = 6780077 is a prime.

It is a super-2 number, since 2×6780081² = 91938996733122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6780083) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 11020 + ... + 11618.

It is an arithmetic number, because the mean of its divisors is an integer number (360000).

Almost surely, 2^6780081 is an apocalyptic number.

It is an amenable number.

6780081 is a deficient number, since it is larger than the sum of its proper divisors (4739919).

6780081 is a wasteful number, since it uses less digits than its factorization.

6780081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 6780081 is about 2603.8588671431. The cubic root of 6780081 is about 189.2684798901.

It can be divided in two parts, 6 and 780081, that added together give a palindrome (780087).

The spelling of 6780081 in words is "six million, seven hundred eighty thousand, eighty-one".