1084681 has 4 divisors (see below), whose sum is σ = 1168132. Its totient is φ = 1001232.

The previous prime is 1084673. The next prime is 1084697. The reversal of 1084681 is 1864801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84681 + 1000000 = 291^2 + 1000^2 .

It is a cyclic number.

It is not a de Polignac number, because 1084681 - 2³ = 1084673 is a prime.

It is a super-2 number, since 2×1084681² = 2353065743522, which contains 22 as substring.

It is a Duffinian number.

1084681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1084621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41706 + ... + 41731.

It is an arithmetic number, because the mean of its divisors is an integer number (292033).

2^1084681 is an apocalyptic number.

It is an amenable number.

1084681 is a deficient number, since it is larger than the sum of its proper divisors (83451).

1084681 is an equidigital number, since it uses as much as digits as its factorization.

1084681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83450.

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

The square root of 1084681 is about 1041.4801966432. The cubic root of 1084681 is about 102.7465727412.

The spelling of 1084681 in words is "one million, eighty-four thousand, six hundred eighty-one".