4144681 has 2 divisors, whose sum is σ = 4144682. Its totient is φ = 4144680.

The previous prime is 4144667. The next prime is 4144711. The reversal of 4144681 is 1864414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2752281 + 1392400 = 1659^2 + 1180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4144681 is a prime.

It is a super-2 number, since 2×4144681² = 34356761183522, which contains 22 as substring.

4144681 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (4144631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2072340 + 2072341.

It is an arithmetic number, because the mean of its divisors is an integer number (2072341).

Almost surely, 2^4144681 is an apocalyptic number.

It is an amenable number.

4144681 is a deficient number, since it is larger than the sum of its proper divisors (1).

4144681 is an equidigital number, since it uses as much as digits as its factorization.

4144681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 28.

The square root of 4144681 is about 2035.8489629636. The cubic root of 4144681 is about 160.6313724654.

The spelling of 4144681 in words is "four million, one hundred forty-four thousand, six hundred eighty-one".