600005981 has 2 divisors, whose sum is σ = 600005982. Its totient is φ = 600005980.

The previous prime is 600005977. The next prime is 600005983. The reversal of 600005981 is 189500006.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 523723225 + 76282756 = 22885^2 + 8734^2 .

It is a cyclic number.

It is not a de Polignac number, because 600005981 - 2² = 600005977 is a prime.

It is a super-2 number, since 2×600005981² = 720014354471544722, which contains 22 as substring.

Together with 600005983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (600005983) 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, 300002990 + 300002991.

It is an arithmetic number, because the mean of its divisors is an integer number (300002991).

Almost surely, 2^600005981 is an apocalyptic number.

It is an amenable number.

600005981 is a deficient number, since it is larger than the sum of its proper divisors (1).

600005981 is an equidigital number, since it uses as much as digits as its factorization.

600005981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 600005981 is about 24495.0195141788. The cubic root of 600005981 is about 843.4354678318.

Adding to 600005981 its reverse (189500006), we get a palindrome (789505987).

The spelling of 600005981 in words is "six hundred million, five thousand, nine hundred eighty-one".