841681 has 8 divisors (see below), whose sum is σ = 915200. Its totient is φ = 771120.

The previous prime is 841663. The next prime is 841691. The reversal of 841681 is 186148.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 841681 - 2¹¹ = 839633 is a prime.

It is a super-2 number, since 2×841681² = 1416853811522, which contains 22 as substring.

It is a Duffinian number.

841681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (841601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126 + ... + 1303.

It is an arithmetic number, because the mean of its divisors is an integer number (114400).

It is a Poulet number, since it divides 2⁸⁴¹⁶⁸⁰-1.

2⁸⁴¹⁶⁸¹ is an apocalyptic number.

It is an amenable number.

841681 is a deficient number, since it is larger than the sum of its proper divisors (73519).

841681 is a wasteful number, since it uses less digits than its factorization.

841681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479.

The product of its digits is 1536, while the sum is 28.

The square root of 841681 is about 917.4317413301. The cubic root of 841681 is about 94.4167776964.

The spelling of 841681 in words is "eight hundred forty-one thousand, six hundred eighty-one".