718045 has 4 divisors (see below), whose sum is σ = 861660. Its totient is φ = 574432.

The previous prime is 718043. The next prime is 718049. The reversal of 718045 is 540817.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540817 = 433 ⋅1249.

It can be written as a sum of positive squares in 2 ways, for example, as 190969 + 527076 = 437^2 + 726^2 .

It is a cyclic number.

It is not a de Polignac number, because 718045 - 2¹ = 718043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (718043) 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, 71800 + ... + 71809.

It is an arithmetic number, because the mean of its divisors is an integer number (215415).

2⁷¹⁸⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

718045 is a deficient number, since it is larger than the sum of its proper divisors (143615).

718045 is a wasteful number, since it uses less digits than its factorization.

718045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143614.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 718045 is about 847.3753595662. The cubic root of 718045 is about 89.5468996727.

It can be divided in two parts, 7180 and 45, that added together give a square (7225 = 85²).

The spelling of 718045 in words is "seven hundred eighteen thousand, forty-five".