1030985 has 4 divisors (see below), whose sum is σ = 1237188. Its totient is φ = 824784.

The previous prime is 1030957. The next prime is 1030987. The reversal of 1030985 is 5890301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 808201 + 222784 = 899^2 + 472^2 .

It is a cyclic number.

It is not a de Polignac number, because 1030985 - 2¹⁸ = 768841 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1030987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103094 + ... + 103103.

It is an arithmetic number, because the mean of its divisors is an integer number (309297).

2^1030985 is an apocalyptic number.

It is an amenable number.

1030985 is a deficient number, since it is larger than the sum of its proper divisors (206203).

1030985 is an equidigital number, since it uses as much as digits as its factorization.

1030985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206202.

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

The square root of 1030985 is about 1015.3743152158. The cubic root of 1030985 is about 101.0223458057.

The spelling of 1030985 in words is "one million, thirty thousand, nine hundred eighty-five".