726001 has 4 divisors (see below), whose sum is σ = 734832. Its totient is φ = 717172.

The previous prime is 725999. The next prime is 726007. The reversal of 726001 is 100627.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100627 = 47 ⋅2141.

It is a cyclic number.

It is not a de Polignac number, because 726001 - 2¹ = 725999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4291 + ... + 4456.

It is an arithmetic number, because the mean of its divisors is an integer number (183708).

2⁷²⁶⁰⁰¹ is an apocalyptic number.

It is an amenable number.

726001 is a deficient number, since it is larger than the sum of its proper divisors (8831).

726001 is an equidigital number, since it uses as much as digits as its factorization.

726001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8830.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 726001 is about 852.0569229811. The cubic root of 726001 is about 89.8764147363.

Adding to 726001 its reverse (100627), we get a palindrome (826628).

The spelling of 726001 in words is "seven hundred twenty-six thousand, one".