6683233981 has 2 divisors, whose sum is σ = 6683233982. Its totient is φ = 6683233980.

The previous prime is 6683233979. The next prime is 6683234003. The reversal of 6683233981 is 1893323866.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4523773081 + 2159460900 = 67259^2 + 46470^2 .

It is a cyclic number.

It is not a de Polignac number, because 6683233981 - 2¹ = 6683233979 is a prime.

It is a super-2 number, since 2×6683233981² = 89331232889586216722, which contains 22 as substring.

Together with 6683233979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6683233961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3341616990 + 3341616991.

It is an arithmetic number, because the mean of its divisors is an integer number (3341616991).

Almost surely, 2^6683233981 is an apocalyptic number.

It is an amenable number.

6683233981 is a deficient number, since it is larger than the sum of its proper divisors (1).

6683233981 is an equidigital number, since it uses as much as digits as its factorization.

6683233981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 49.

The square root of 6683233981 is about 81751.0488067279. The cubic root of 6683233981 is about 1883.6298120525.

The spelling of 6683233981 in words is "six billion, six hundred eighty-three million, two hundred thirty-three thousand, nine hundred eighty-one".