411681 has 8 divisors (see below), whose sum is σ = 562464. Its totient is φ = 267680.

The previous prime is 411679. The next prime is 411683. The reversal of 411681 is 186114.

It is an interprime number because it is at equal distance from previous prime (411679) and next prime (411683).

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 411681 - 2¹ = 411679 is a prime.

It is a super-2 number, since 2×411681² = 338962491522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (411683) 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, 1551 + ... + 1796.

It is an arithmetic number, because the mean of its divisors is an integer number (70308).

2⁴¹¹⁶⁸¹ is an apocalyptic number.

411681 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

411681 is a deficient number, since it is larger than the sum of its proper divisors (150783).

411681 is a wasteful number, since it uses less digits than its factorization.

411681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391.

The product of its digits is 192, while the sum is 21.

The square root of 411681 is about 641.6237215066. The cubic root of 411681 is about 74.3909790774.

Adding to 411681 its reverse (186114), we get a palindrome (597795).

It can be divided in two parts, 41 and 1681, that multiplied together give a cube (68921 = 41³).

The spelling of 411681 in words is "four hundred eleven thousand, six hundred eighty-one".