6325981 has 2 divisors, whose sum is σ = 6325982. Its totient is φ = 6325980.

The previous prime is 6325967. The next prime is 6325987. The reversal of 6325981 is 1895236.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5040025 + 1285956 = 2245^2 + 1134^2 .

It is a cyclic number.

It is not a de Polignac number, because 6325981 - 2¹³ = 6317789 is a prime.

It is a super-2 number, since 2×6325981² = 80036071224722, which contains 22 as substring.

6325981 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6325987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3162990 + 3162991.

It is an arithmetic number, because the mean of its divisors is an integer number (3162991).

Almost surely, 2^6325981 is an apocalyptic number.

It is an amenable number.

6325981 is a deficient number, since it is larger than the sum of its proper divisors (1).

6325981 is an equidigital number, since it uses as much as digits as its factorization.

6325981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 34.

The square root of 6325981 is about 2515.1502937200. The cubic root of 6325981 is about 184.9450140945.

The spelling of 6325981 in words is "six million, three hundred twenty-five thousand, nine hundred eighty-one".