1036991 has 2 divisors, whose sum is σ = 1036992. Its totient is φ = 1036990.

The previous prime is 1036979. The next prime is 1036993. The reversal of 1036991 is 1996301.

It is a strong prime.

It is an emirp because it is prime and its reverse (1996301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1036991 is a prime.

Together with 1036993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1036993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 518495 + 518496.

It is an arithmetic number, because the mean of its divisors is an integer number (518496).

2^1036991 is an apocalyptic number.

1036991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1036991 is an equidigital number, since it uses as much as digits as its factorization.

1036991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 1036991 is about 1018.3275504473. The cubic root of 1036991 is about 101.2181345641.

The spelling of 1036991 in words is "one million, thirty-six thousand, nine hundred ninety-one".