6323981 has 2 divisors, whose sum is σ = 6323982. Its totient is φ = 6323980.

The previous prime is 6323951. The next prime is 6324023. The reversal of 6323981 is 1893236.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6295081 + 28900 = 2509^2 + 170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6323981 is a prime.

It is a super-2 number, since 2×6323981² = 79985471376722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6323951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3161990 + 3161991.

It is an arithmetic number, because the mean of its divisors is an integer number (3161991).

Almost surely, 2^6323981 is an apocalyptic number.

It is an amenable number.

6323981 is a deficient number, since it is larger than the sum of its proper divisors (1).

6323981 is an equidigital number, since it uses as much as digits as its factorization.

6323981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 6323981 is about 2514.7526717353. The cubic root of 6323981 is about 184.9255215174.

The spelling of 6323981 in words is "six million, three hundred twenty-three thousand, nine hundred eighty-one".