4568981 has 2 divisors, whose sum is σ = 4568982. Its totient is φ = 4568980.

The previous prime is 4568969. The next prime is 4568989. The reversal of 4568981 is 1898654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4036081 + 532900 = 2009^2 + 730^2 .

It is a cyclic number.

It is not a de Polignac number, because 4568981 - 2²² = 374677 is a prime.

It is a super-2 number, since 2×4568981² = 41751174756722, 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 (4568989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2284490 + 2284491.

It is an arithmetic number, because the mean of its divisors is an integer number (2284491).

Almost surely, 2^4568981 is an apocalyptic number.

It is an amenable number.

4568981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4568981 is an equidigital number, since it uses as much as digits as its factorization.

4568981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 41.

The square root of 4568981 is about 2137.5174853086. The cubic root of 4568981 is about 165.9356817647.

The spelling of 4568981 in words is "four million, five hundred sixty-eight thousand, nine hundred eighty-one".