617943 has 4 divisors (see below), whose sum is σ = 823928. Its totient is φ = 411960.

The previous prime is 617917. The next prime is 617951. The reversal of 617943 is 349716.

It is a happy number.

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

It is not a de Polignac number, because 617943 - 2⁶ = 617879 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 617943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102988 + ... + 102993.

It is an arithmetic number, because the mean of its divisors is an integer number (205982).

2⁶¹⁷⁹⁴³ is an apocalyptic number.

617943 is a deficient number, since it is larger than the sum of its proper divisors (205985).

617943 is a wasteful number, since it uses less digits than its factorization.

617943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205984.

The product of its digits is 4536, while the sum is 30.

The square root of 617943 is about 786.0935058885. The cubic root of 617943 is about 85.1757838559.

The spelling of 617943 in words is "six hundred seventeen thousand, nine hundred forty-three".