6780811 has 8 divisors (see below), whose sum is σ = 6937200. Its totient is φ = 6625920.

The previous prime is 6780769. The next prime is 6780817. The reversal of 6780811 is 1180876.

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

It is a cyclic number.

It is not a de Polignac number, because 6780811 - 2⁹ = 6780299 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (6780817) 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, 16375 + ... + 16783.

It is an arithmetic number, because the mean of its divisors is an integer number (867150).

Almost surely, 2^6780811 is an apocalyptic number.

6780811 is a deficient number, since it is larger than the sum of its proper divisors (156389).

6780811 is a wasteful number, since it uses less digits than its factorization.

6780811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 6780811 is about 2603.9990399384. Note that the first 3 decimals coincide. The cubic root of 6780811 is about 189.2752723867.

The spelling of 6780811 in words is "six million, seven hundred eighty thousand, eight hundred eleven".