981873 has 6 divisors (see below), whose sum is σ = 1418274. Its totient is φ = 654576.

The previous prime is 981823. The next prime is 981887. The reversal of 981873 is 378189.

It can be written as a sum of positive squares in only one way, i.e., 815409 + 166464 = 903^2 + 408^2 .

It is not a de Polignac number, because 981873 - 2⁶ = 981809 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (981823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54540 + ... + 54557.

It is an arithmetic number, because the mean of its divisors is an integer number (236379).

2⁹⁸¹⁸⁷³ is an apocalyptic number.

It is an amenable number.

981873 is a deficient number, since it is larger than the sum of its proper divisors (436401).

981873 is a wasteful number, since it uses less digits than its factorization.

981873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109103 (or 109100 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 981873 is about 990.8950499422. The cubic root of 981873 is about 99.3920784698.

The spelling of 981873 in words is "nine hundred eighty-one thousand, eight hundred seventy-three".