726580801 has 4 divisors (see below), whose sum is σ = 728873172. Its totient is φ = 724288432.

The previous prime is 726580739. The next prime is 726580817. The reversal of 726580801 is 108085627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 108085627 = 13 ⋅8314279.

It can be written as a sum of positive squares in 2 ways, for example, as 11553201 + 715027600 = 3399^2 + 26740^2 .

It is a cyclic number.

It is not a de Polignac number, because 726580801 - 2²¹ = 724483649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726580831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1145710 + ... + 1146343.

It is an arithmetic number, because the mean of its divisors is an integer number (182218293).

Almost surely, 2^726580801 is an apocalyptic number.

It is an amenable number.

726580801 is a deficient number, since it is larger than the sum of its proper divisors (2292371).

726580801 is a wasteful number, since it uses less digits than its factorization.

726580801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292370.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 726580801 is about 26955.1627893433. The cubic root of 726580801 is about 899.0033415656.

The spelling of 726580801 in words is "seven hundred twenty-six million, five hundred eighty thousand, eight hundred one".