4415681 has 2 divisors, whose sum is σ = 4415682. Its totient is φ = 4415680.

The previous prime is 4415669. The next prime is 4415687. The reversal of 4415681 is 1865144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4165681 + 250000 = 2041^2 + 500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4415681 is a prime.

It is a super-2 number, since 2×4415681² = 38996477387522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4415687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2207840 + 2207841.

It is an arithmetic number, because the mean of its divisors is an integer number (2207841).

Almost surely, 2^4415681 is an apocalyptic number.

It is an amenable number.

4415681 is a deficient number, since it is larger than the sum of its proper divisors (1).

4415681 is an equidigital number, since it uses as much as digits as its factorization.

4415681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 29.

The square root of 4415681 is about 2101.3521837141. The cubic root of 4415681 is about 164.0586866113.

The spelling of 4415681 in words is "four million, four hundred fifteen thousand, six hundred eighty-one".