789543 has 12 divisors (see below), whose sum is σ = 1171768. Its totient is φ = 511920.

The previous prime is 789533. The next prime is 789557. The reversal of 789543 is 345987.

It is not a de Polignac number, because 789543 - 2⁴ = 789527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 789498 and 789507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789533) 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, 853 + ... + 1518.

2⁷⁸⁹⁵⁴³ is an apocalyptic number.

789543 is a deficient number, since it is larger than the sum of its proper divisors (382225).

789543 is a wasteful number, since it uses less digits than its factorization.

789543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414 (or 2411 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 789543 is about 888.5623219561. The cubic root of 789543 is about 92.4255256403.

Subtracting from 789543 its reverse (345987), we obtain a square (443556 = 666²).

The spelling of 789543 in words is "seven hundred eighty-nine thousand, five hundred forty-three".