718249 has 4 divisors (see below), whose sum is σ = 820864. Its totient is φ = 615636.

The previous prime is 718241. The next prime is 718259. The reversal of 718249 is 942817.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 942817 = 53 ⋅17789.

It is not a de Polignac number, because 718249 - 2³ = 718241 is a prime.

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 718249.

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, 51297 + ... + 51310.

It is an arithmetic number, because the mean of its divisors is an integer number (205216).

2⁷¹⁸²⁴⁹ is an apocalyptic number.

It is an amenable number.

718249 is a deficient number, since it is larger than the sum of its proper divisors (102615).

718249 is a wasteful number, since it uses less digits than its factorization.

718249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102614.

The product of its digits is 4032, while the sum is 31.

The square root of 718249 is about 847.4957227031. The cubic root of 718249 is about 89.5553791031. Note that the first 3 decimals are identical.

It can be divided in two parts, 71824 and 9, that multiplied together give a square (646416 = 804²).

The spelling of 718249 in words is "seven hundred eighteen thousand, two hundred forty-nine".