6681339 has 64 divisors (see below), whose sum is σ = 12441600. Its totient is φ = 3459456.

The previous prime is 6681329. The next prime is 6681359. The reversal of 6681339 is 9331866.

It is a happy number.

It is not a de Polignac number, because 6681339 - 2¹⁵ = 6648571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6681329) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 126037 + ... + 126089.

It is an arithmetic number, because the mean of its divisors is an integer number (194400).

Almost surely, 2^6681339 is an apocalyptic number.

6681339 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

6681339 is a deficient number, since it is larger than the sum of its proper divisors (5760261).

6681339 is a wasteful number, since it uses less digits than its factorization.

6681339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 115 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 6681339 is about 2584.8286210115. The cubic root of 6681339 is about 188.3451765509.

The spelling of 6681339 in words is "six million, six hundred eighty-one thousand, three hundred thirty-nine".