4224681 has 18 divisors (see below), whose sum is σ = 6310122. Its totient is φ = 2722080.

The previous prime is 4224679. The next prime is 4224719. The reversal of 4224681 is 1864224.

It can be written as a sum of positive squares in only one way, i.e., 2576025 + 1648656 = 1605^2 + 1284^2 .

It is not a de Polignac number, because 4224681 - 2¹ = 4224679 is a prime.

It is a super-2 number, since 2×4224681² = 35695859103522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4224601) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 39430 + ... + 39536.

Almost surely, 2^4224681 is an apocalyptic number.

4224681 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4224681 is a deficient number, since it is larger than the sum of its proper divisors (2085441).

4224681 is a wasteful number, since it uses less digits than its factorization.

4224681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 151 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 4224681 is about 2055.4028802159. The cubic root of 4224681 is about 161.6582874933.

The spelling of 4224681 in words is "four million, two hundred twenty-four thousand, six hundred eighty-one".