1049681 has 2 divisors, whose sum is σ = 1049682. Its totient is φ = 1049680.

The previous prime is 1049677. The next prime is 1049683. The reversal of 1049681 is 1869401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 982081 + 67600 = 991^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 1049681 - 2² = 1049677 is a prime.

It is a super-2 number, since 2×1049681² = 2203660403522, which contains 22 as substring.

Together with 1049683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1049683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524840 + 524841.

It is an arithmetic number, because the mean of its divisors is an integer number (524841).

2^1049681 is an apocalyptic number.

It is an amenable number.

1049681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1049681 is an equidigital number, since it uses as much as digits as its factorization.

1049681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1049681 is about 1024.5394087101. The cubic root of 1049681 is about 101.6293416092.

The spelling of 1049681 in words is "one million, forty-nine thousand, six hundred eighty-one".