726663547 has 4 divisors (see below), whose sum is σ = 729864936. Its totient is φ = 723462160.

The previous prime is 726663523. The next prime is 726663557. The reversal of 726663547 is 745366627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 745366627 = 12011 ⋅62057.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726663547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 726663497 and 726663506.

It is not an unprimeable number, because it can be changed into a prime (726663557) 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 3 ways as a sum of consecutive naturals, for example, 1600354 + ... + 1600807.

It is an arithmetic number, because the mean of its divisors is an integer number (182466234).

Almost surely, 2^726663547 is an apocalyptic number.

726663547 is a deficient number, since it is larger than the sum of its proper divisors (3201389).

726663547 is a wasteful number, since it uses less digits than its factorization.

726663547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3201388.

The product of its digits is 1270080, while the sum is 46.

The square root of 726663547 is about 26956.6976278624. The cubic root of 726663547 is about 899.0374676654.

The spelling of 726663547 in words is "seven hundred twenty-six million, six hundred sixty-three thousand, five hundred forty-seven".