726432747 has 4 divisors (see below), whose sum is σ = 968577000. Its totient is φ = 484288496.

The previous prime is 726432739. The next prime is 726432781. The reversal of 726432747 is 747234627.

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

It is a cyclic number.

It is not a de Polignac number, because 726432747 - 2³ = 726432739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 726432699 and 726432708.

It is not an unprimeable number, because it can be changed into a prime (726432727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121072122 + ... + 121072127.

It is an arithmetic number, because the mean of its divisors is an integer number (242144250).

Almost surely, 2^726432747 is an apocalyptic number.

726432747 is a deficient number, since it is larger than the sum of its proper divisors (242144253).

726432747 is a wasteful number, since it uses less digits than its factorization.

726432747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242144252.

The product of its digits is 395136, while the sum is 42.

The square root of 726432747 is about 26952.4163480754. The cubic root of 726432747 is about 898.9422746789.

The spelling of 726432747 in words is "seven hundred twenty-six million, four hundred thirty-two thousand, seven hundred forty-seven".