718213 has 4 divisors (see below), whose sum is σ = 723520. Its totient is φ = 712908.

The previous prime is 718187. The next prime is 718241. The reversal of 718213 is 312817.

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: 312817 = 17 ⋅18401.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-718213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (718513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2445 + ... + 2722.

It is an arithmetic number, because the mean of its divisors is an integer number (180880).

2⁷¹⁸²¹³ is an apocalyptic number.

It is an amenable number.

718213 is a deficient number, since it is larger than the sum of its proper divisors (5307).

718213 is a wasteful number, since it uses less digits than its factorization.

718213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5306.

The product of its digits is 336, while the sum is 22.

The square root of 718213 is about 847.4744833917. The cubic root of 718213 is about 89.5538828497.

It can be divided in two parts, 71821 and 3, that added together give a square (71824 = 268²).

The spelling of 718213 in words is "seven hundred eighteen thousand, two hundred thirteen".