981073 has 2 divisors, whose sum is σ = 981074. Its totient is φ = 981072.

The previous prime is 981067. The next prime is 981077. The reversal of 981073 is 370189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 898704 + 82369 = 948^2 + 287^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-981073 is a prime.

981073 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (981077) 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, 490536 + 490537.

It is an arithmetic number, because the mean of its divisors is an integer number (490537).

2⁹⁸¹⁰⁷³ is an apocalyptic number.

It is an amenable number.

981073 is a deficient number, since it is larger than the sum of its proper divisors (1).

981073 is an equidigital number, since it uses as much as digits as its factorization.

981073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 981073 is about 990.4912922384. The cubic root of 981073 is about 99.3650772630.

The spelling of 981073 in words is "nine hundred eighty-one thousand, seventy-three".