718243 has 4 divisors (see below), whose sum is σ = 743040. Its totient is φ = 693448.

The previous prime is 718241. The next prime is 718259. The reversal of 718243 is 342817.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342817 = 19 ⋅18043.

It is not a de Polignac number, because 718243 - 2¹ = 718241 is a prime.

It is a Duffinian number.

718243 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (718241) 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, 12355 + ... + 12412.

It is an arithmetic number, because the mean of its divisors is an integer number (185760).

2⁷¹⁸²⁴³ is an apocalyptic number.

718243 is a deficient number, since it is larger than the sum of its proper divisors (24797).

718243 is a wasteful number, since it uses less digits than its factorization.

718243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24796.

The product of its digits is 1344, while the sum is 25.

The square root of 718243 is about 847.4921828548. The cubic root of 718243 is about 89.5551297310. Note that the first 3 decimals are identical.

It can be divided in two parts, 7182 and 43, that added together give a square (7225 = 85²).

The spelling of 718243 in words is "seven hundred eighteen thousand, two hundred forty-three".