981733 has 12 divisors (see below), whose sum is σ = 1080640. Its totient is φ = 891072.

The previous prime is 981731. The next prime is 981769. The reversal of 981733 is 337189.

It is not a de Polignac number, because 981733 - 2¹ = 981731 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a Duffinian number.

981733 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 981695 and 981704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12388 + ... + 12466.

2⁹⁸¹⁷³³ is an apocalyptic number.

It is an amenable number.

981733 is a deficient number, since it is larger than the sum of its proper divisors (98907).

981733 is a wasteful number, since it uses less digits than its factorization.

981733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 139 counting only the distinct ones).

The product of its digits is 4536, while the sum is 31.

The square root of 981733 is about 990.8244042211. The cubic root of 981733 is about 99.3873543176.

The spelling of 981733 in words is "nine hundred eighty-one thousand, seven hundred thirty-three".