726111745 has 4 divisors (see below), whose sum is σ = 871334100. Its totient is φ = 580889392.

The previous prime is 726111739. The next prime is 726111767. The reversal of 726111745 is 547111627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 547111627 = 9829 ⋅55663.

It can be written as a sum of positive squares in 2 ways, for example, as 349091856 + 377019889 = 18684^2 + 19417^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726111745 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 726111745.

It is an unprimeable number.

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, 72611170 + ... + 72611179.

It is an arithmetic number, because the mean of its divisors is an integer number (217833525).

Almost surely, 2^726111745 is an apocalyptic number.

It is an amenable number.

726111745 is a deficient number, since it is larger than the sum of its proper divisors (145222355).

726111745 is a wasteful number, since it uses less digits than its factorization.

726111745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145222354.

The product of its digits is 11760, while the sum is 34.

The square root of 726111745 is about 26946.4607137932. The cubic root of 726111745 is about 898.8098445336.

The spelling of 726111745 in words is "seven hundred twenty-six million, one hundred eleven thousand, seven hundred forty-five".