6681797 has 4 divisors (see below), whose sum is σ = 6696876. Its totient is φ = 6666720.

The previous prime is 6681791. The next prime is 6681817. The reversal of 6681797 is 7971866.

6681797 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2149156 + 4532641 = 1466^2 + 2129^2 .

It is a cyclic number.

It is not a de Polignac number, because 6681797 - 2⁴ = 6681781 is a prime.

It is a super-2 number, since 2×6681797² = 89292822298418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6681791) 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 3 ways as a sum of consecutive naturals, for example, 6854 + ... + 7767.

It is an arithmetic number, because the mean of its divisors is an integer number (1674219).

Almost surely, 2^6681797 is an apocalyptic number.

It is an amenable number.

6681797 is a deficient number, since it is larger than the sum of its proper divisors (15079).

6681797 is a wasteful number, since it uses less digits than its factorization.

6681797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15078.

The product of its digits is 127008, while the sum is 44.

The square root of 6681797 is about 2584.9172133745. The cubic root of 6681797 is about 188.3494800855.

The spelling of 6681797 in words is "six million, six hundred eighty-one thousand, seven hundred ninety-seven".