1075691 has 2 divisors, whose sum is σ = 1075692. Its totient is φ = 1075690.

The previous prime is 1075681. The next prime is 1075693. The reversal of 1075691 is 1965701.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1965701) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1075691 is a prime.

It is a super-2 number, since 2×1075691² = 2314222254962, which contains 22 as substring.

Together with 1075693, 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 (1075693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537845 + 537846.

It is an arithmetic number, because the mean of its divisors is an integer number (537846).

2^1075691 is an apocalyptic number.

1075691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1075691 is an equidigital number, since it uses as much as digits as its factorization.

1075691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 1075691 is about 1037.1552439245. The cubic root of 1075691 is about 102.4619251802.

The spelling of 1075691 in words is "one million, seventy-five thousand, six hundred ninety-one".