981263 has 2 divisors, whose sum is σ = 981264. Its totient is φ = 981262.

The previous prime is 981241. The next prime is 981271. The reversal of 981263 is 362189.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 981263 - 2⁶ = 981199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981283) 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 as a sum of consecutive naturals, namely, 490631 + 490632.

It is an arithmetic number, because the mean of its divisors is an integer number (490632).

2⁹⁸¹²⁶³ is an apocalyptic number.

981263 is a deficient number, since it is larger than the sum of its proper divisors (1).

981263 is an equidigital number, since it uses as much as digits as its factorization.

981263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

The square root of 981263 is about 990.5871995943. The cubic root of 981263 is about 99.3714913783.

The spelling of 981263 in words is "nine hundred eighty-one thousand, two hundred sixty-three".