1075681 has 2 divisors, whose sum is σ = 1075682. Its totient is φ = 1075680.

The previous prime is 1075673. The next prime is 1075691. The reversal of 1075681 is 1865701.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1018081 + 57600 = 1009^2 + 240^2 .

It is a cyclic number.

It is not a de Polignac number, because 1075681 - 2³ = 1075673 is a prime.

It is a super-2 number, since 2×1075681² = 2314179227522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1075601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537840 + 537841.

It is an arithmetic number, because the mean of its divisors is an integer number (537841).

2^1075681 is an apocalyptic number.

It is an amenable number.

1075681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1075681 is an equidigital number, since it uses as much as digits as its factorization.

1075681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 1075681 is about 1037.1504230342. The cubic root of 1075681 is about 102.4616076720.

The spelling of 1075681 in words is "one million, seventy-five thousand, six hundred eighty-one".