1045691 has 2 divisors, whose sum is σ = 1045692. Its totient is φ = 1045690.

The previous prime is 1045679. The next prime is 1045727. The reversal of 1045691 is 1965401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1045691 - 2¹⁴ = 1029307 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1045691.

It is not a weakly prime, because it can be changed into another prime (1045621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522845 + 522846.

It is an arithmetic number, because the mean of its divisors is an integer number (522846).

2^1045691 is an apocalyptic number.

1045691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045691 is an equidigital number, since it uses as much as digits as its factorization.

1045691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1045691 is about 1022.5903383076. The cubic root of 1045691 is about 101.5004084852.

The spelling of 1045691 in words is "one million, forty-five thousand, six hundred ninety-one".