726326819 has 8 divisors (see below), whose sum is σ = 769623120. Its totient is φ = 683094016.

The previous prime is 726326801. The next prime is 726326827. The reversal of 726326819 is 918623627.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 726326819 - 2⁸ = 726326563 is a prime.

It is a super-2 number, since 2×726326819² = 1055101295997317522, which contains 22 as substring.

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 726326819.

It is not an unprimeable number, because it can be changed into a prime (726326879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8792 + ... + 39114.

It is an arithmetic number, because the mean of its divisors is an integer number (96202890).

Almost surely, 2^726326819 is an apocalyptic number.

726326819 is a deficient number, since it is larger than the sum of its proper divisors (43296301).

726326819 is a wasteful number, since it uses less digits than its factorization.

726326819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31749.

The product of its digits is 217728, while the sum is 44.

The square root of 726326819 is about 26950.4511836073. The cubic root of 726326819 is about 898.8985781419.

The spelling of 726326819 in words is "seven hundred twenty-six million, three hundred twenty-six thousand, eight hundred nineteen".