965543 has 4 divisors (see below), whose sum is σ = 968448. Its totient is φ = 962640.

The previous prime is 965533. The next prime is 965551. The reversal of 965543 is 345569.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345569 = 7 ⋅49367.

It is a cyclic number.

It is not a de Polignac number, because 965543 - 2¹⁰ = 964519 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10 and base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 965543.

It is not an unprimeable number, because it can be changed into a prime (965533) 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, 878 + ... + 1643.

It is an arithmetic number, because the mean of its divisors is an integer number (242112).

2⁹⁶⁵⁵⁴³ is an apocalyptic number.

965543 is a deficient number, since it is larger than the sum of its proper divisors (2905).

965543 is a wasteful number, since it uses less digits than its factorization.

965543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2904.

The product of its digits is 16200, while the sum is 32.

The square root of 965543 is about 982.6204760741. The cubic root of 965543 is about 98.8379827953.

The spelling of 965543 in words is "nine hundred sixty-five thousand, five hundred forty-three".