1681411 has 2 divisors, whose sum is σ = 1681412. Its totient is φ = 1681410.

The previous prime is 1681403. The next prime is 1681423. The reversal of 1681411 is 1141861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1681411 - 2³ = 1681403 is a prime.

It is a Chen prime.

1681411 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1681711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840705 + 840706.

It is an arithmetic number, because the mean of its divisors is an integer number (840706).

2^1681411 is an apocalyptic number.

1681411 is a deficient number, since it is larger than the sum of its proper divisors (1).

1681411 is an equidigital number, since it uses as much as digits as its factorization.

1681411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 22.

The square root of 1681411 is about 1296.6923305087. The cubic root of 1681411 is about 118.9117109877.

The spelling of 1681411 in words is "one million, six hundred eighty-one thousand, four hundred eleven".