726495905 has 8 divisors (see below), whose sum is σ = 873211752. Its totient is φ = 580252288.

The previous prime is 726495877. The next prime is 726495923. The reversal of 726495905 is 509594627.

726495905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 45859984 + 680635921 = 6772^2 + 26089^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 726495905 - 2¹⁴ = 726479521 is a prime.

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 726495905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114662 + ... + 120831.

It is an arithmetic number, because the mean of its divisors is an integer number (109151469).

Almost surely, 2^726495905 is an apocalyptic number.

It is an amenable number.

726495905 is a deficient number, since it is larger than the sum of its proper divisors (146715847).

726495905 is a wasteful number, since it uses less digits than its factorization.

726495905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236115.

The product of its (nonzero) digits is 680400, while the sum is 47.

The square root of 726495905 is about 26953.5879800816. The cubic root of 726495905 is about 898.9683260700.

The spelling of 726495905 in words is "seven hundred twenty-six million, four hundred ninety-five thousand, nine hundred five".