726316243 has 4 divisors (see below), whose sum is σ = 726669360. Its totient is φ = 725963128.

The previous prime is 726316207. The next prime is 726316259. The reversal of 726316243 is 342613627.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726316243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 726316199 and 726316208.

It is not an unprimeable number, because it can be changed into a prime (726316343) 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, 173455 + ... + 177592.

It is an arithmetic number, because the mean of its divisors is an integer number (181667340).

Almost surely, 2^726316243 is an apocalyptic number.

726316243 is a deficient number, since it is larger than the sum of its proper divisors (353117).

726316243 is a wasteful number, since it uses less digits than its factorization.

726316243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353116.

The product of its digits is 36288, while the sum is 34.

The square root of 726316243 is about 26950.2549709646. The cubic root of 726316243 is about 898.8942151852.

It can be divided in two parts, 726 and 316243, that added together give a square (316969 = 563²).

The spelling of 726316243 in words is "seven hundred twenty-six million, three hundred sixteen thousand, two hundred forty-three".