4401681 has 16 divisors (see below), whose sum is σ = 6038400. Its totient is φ = 2851200.

The previous prime is 4401667. The next prime is 4401697. The reversal of 4401681 is 1861044.

It is not a de Polignac number, because 4401681 - 2¹³ = 4393489 is a prime.

It is a super-2 number, since 2×4401681² = 38749591251522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4401601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22020 + ... + 22218.

It is an arithmetic number, because the mean of its divisors is an integer number (377400).

Almost surely, 2^4401681 is an apocalyptic number.

It is an amenable number.

4401681 is a deficient number, since it is larger than the sum of its proper divisors (1636719).

4401681 is a wasteful number, since it uses less digits than its factorization.

4401681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 4401681 is about 2098.0183507300. The cubic root of 4401681 is about 163.8851193277.

The spelling of 4401681 in words is "four million, four hundred one thousand, six hundred eighty-one".