6681307 has 4 divisors (see below), whose sum is σ = 6781096. Its totient is φ = 6581520.

The previous prime is 6681287. The next prime is 6681329. The reversal of 6681307 is 7031866.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7031866 = 2 ⋅3515933.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6681307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6681377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49794 + ... + 49927.

It is an arithmetic number, because the mean of its divisors is an integer number (1695274).

Almost surely, 2^6681307 is an apocalyptic number.

6681307 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

6681307 is a deficient number, since it is larger than the sum of its proper divisors (99789).

6681307 is an equidigital number, since it uses as much as digits as its factorization.

6681307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99788.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 6681307 is about 2584.8224310385. The cubic root of 6681307 is about 188.3448758600.

The spelling of 6681307 in words is "six million, six hundred eighty-one thousand, three hundred seven".