6781011 has 8 divisors (see below), whose sum is σ = 9573264. Its totient is φ = 4254720.

The previous prime is 6781009. The next prime is 6781013. The reversal of 6781011 is 1101876.

It is an interprime number because it is at equal distance from previous prime (6781009) and next prime (6781013).

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

It is not a de Polignac number, because 6781011 - 2¹ = 6781009 is a prime.

It is a super-2 number, since 2×6781011² = 91964220364242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6781013) 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 7 ways as a sum of consecutive naturals, for example, 66430 + ... + 66531.

It is an arithmetic number, because the mean of its divisors is an integer number (1196658).

Almost surely, 2^6781011 is an apocalyptic number.

6781011 is a deficient number, since it is larger than the sum of its proper divisors (2792253).

6781011 is a wasteful number, since it uses less digits than its factorization.

6781011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132981.

The product of its (nonzero) digits is 336, while the sum is 24.

The square root of 6781011 is about 2604.0374421271. The cubic root of 6781011 is about 189.2771332596.

Adding to 6781011 its reverse (1101876), we get a palindrome (7882887).

The spelling of 6781011 in words is "six million, seven hundred eighty-one thousand, eleven".