726289751 has 8 divisors (see below), whose sum is σ = 801219600. Its totient is φ = 652843840.

The previous prime is 726289747. The next prime is 726289769. The reversal of 726289751 is 157982627.

It is a happy number.

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

It is not a de Polignac number, because 726289751 - 2² = 726289747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 726289696 and 726289705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726289951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369956 + ... + 371913.

It is an arithmetic number, because the mean of its divisors is an integer number (100152450).

Almost surely, 2^726289751 is an apocalyptic number.

726289751 is a deficient number, since it is larger than the sum of its proper divisors (74929849).

726289751 is a wasteful number, since it uses less digits than its factorization.

726289751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741969.

The product of its digits is 423360, while the sum is 47.

The square root of 726289751 is about 26949.7634683498. The cubic root of 726289751 is about 898.8832861556.

The spelling of 726289751 in words is "seven hundred twenty-six million, two hundred eighty-nine thousand, seven hundred fifty-one".