6681020239 has 2 divisors, whose sum is σ = 6681020240. Its totient is φ = 6681020238.

The previous prime is 6681020221. The next prime is 6681020251. The reversal of 6681020239 is 9320201866.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6681020239 - 2⁵ = 6681020207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6681020198 and 6681020207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6681020219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3340510119 + 3340510120.

It is an arithmetic number, because the mean of its divisors is an integer number (3340510120).

Almost surely, 2^6681020239 is an apocalyptic number.

6681020239 is a deficient number, since it is larger than the sum of its proper divisors (1).

6681020239 is an equidigital number, since it uses as much as digits as its factorization.

6681020239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 6681020239 is about 81737.5081526223. The cubic root of 6681020239 is about 1883.4218124059.

The spelling of 6681020239 in words is "six billion, six hundred eighty-one million, twenty thousand, two hundred thirty-nine".