4259681 has 2 divisors, whose sum is σ = 4259682. Its totient is φ = 4259680.

The previous prime is 4259677. The next prime is 4259683. The reversal of 4259681 is 1869524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3478225 + 781456 = 1865^2 + 884^2 .

It is a cyclic number.

It is not a de Polignac number, because 4259681 - 2² = 4259677 is a prime.

It is a super-2 number, since 2×4259681² = 36289764443522, which contains 22 as substring.

Together with 4259683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4259683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2129840 + 2129841.

It is an arithmetic number, because the mean of its divisors is an integer number (2129841).

Almost surely, 2^4259681 is an apocalyptic number.

It is an amenable number.

4259681 is a deficient number, since it is larger than the sum of its proper divisors (1).

4259681 is an equidigital number, since it uses as much as digits as its factorization.

4259681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 4259681 is about 2063.8994646058. The cubic root of 4259681 is about 162.1034877048.

The spelling of 4259681 in words is "four million, two hundred fifty-nine thousand, six hundred eighty-one".