726506707 has 4 divisors (see below), whose sum is σ = 738820440. Its totient is φ = 714192976.

The previous prime is 726506687. The next prime is 726506741. The reversal of 726506707 is 707605627.

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-726506707 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 726506707.

It is not an unprimeable number, because it can be changed into a prime (726506107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6156778 + ... + 6156895.

It is an arithmetic number, because the mean of its divisors is an integer number (184705110).

Almost surely, 2^726506707 is an apocalyptic number.

726506707 is a deficient number, since it is larger than the sum of its proper divisors (12313733).

726506707 is a wasteful number, since it uses less digits than its factorization.

726506707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12313732.

The product of its (nonzero) digits is 123480, while the sum is 40.

The square root of 726506707 is about 26953.7883608223. The cubic root of 726506707 is about 898.9727815242.

The spelling of 726506707 in words is "seven hundred twenty-six million, five hundred six thousand, seven hundred seven".