981743 has 4 divisors (see below), whose sum is σ = 1122000. Its totient is φ = 841488.

The previous prime is 981731. The next prime is 981769. The reversal of 981743 is 347189.

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

It is a cyclic number.

It is not a de Polignac number, because 981743 - 2¹⁰ = 980719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70118 + ... + 70131.

It is an arithmetic number, because the mean of its divisors is an integer number (280500).

2⁹⁸¹⁷⁴³ is an apocalyptic number.

981743 is a deficient number, since it is larger than the sum of its proper divisors (140257).

981743 is a wasteful number, since it uses less digits than its factorization.

981743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140256.

The product of its digits is 6048, while the sum is 32.

The square root of 981743 is about 990.8294505110. The cubic root of 981743 is about 99.3876917719.

The spelling of 981743 in words is "nine hundred eighty-one thousand, seven hundred forty-three".