718436 has 12 divisors (see below), whose sum is σ = 1263612. Its totient is φ = 357408.

The previous prime is 718433. The next prime is 718453. The reversal of 718436 is 634817.

It can be written as a sum of positive squares in 2 ways, for example, as 295936 + 422500 = 544^2 + 650^2 .

It is a junction number, because it is equal to n+sod(n) for n = 718399 and 718408.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 718436.

It is not an unprimeable number, because it can be changed into a prime (718433) 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, 866 + ... + 1478.

It is an arithmetic number, because the mean of its divisors is an integer number (105301).

2⁷¹⁸⁴³⁶ is an apocalyptic number.

It is an amenable number.

718436 is a deficient number, since it is larger than the sum of its proper divisors (545176).

718436 is a wasteful number, since it uses less digits than its factorization.

718436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910 (or 908 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 718436 is about 847.6060405637. The cubic root of 718436 is about 89.5631505040.

The spelling of 718436 in words is "seven hundred eighteen thousand, four hundred thirty-six".