726336089 has 8 divisors (see below), whose sum is σ = 744783432. Its totient is φ = 708099840.

The previous prime is 726336053. The next prime is 726336103. The reversal of 726336089 is 980633627.

It can be written as a sum of positive squares in 4 ways, for example, as 163840000 + 562496089 = 12800^2 + 23717^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726336089 is a prime.

It is a super-2 number, since 2×726336089² = 1055128228367631842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726336029) 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 7 ways as a sum of consecutive naturals, for example, 45794 + ... + 59579.

It is an arithmetic number, because the mean of its divisors is an integer number (93097929).

Almost surely, 2^726336089 is an apocalyptic number.

It is an amenable number.

726336089 is a deficient number, since it is larger than the sum of its proper divisors (18447343).

726336089 is a wasteful number, since it uses less digits than its factorization.

726336089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105547.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 726336089 is about 26950.6231653370. The cubic root of 726336089 is about 898.9024022948.

The spelling of 726336089 in words is "seven hundred twenty-six million, three hundred thirty-six thousand, eighty-nine".