726005 has 8 divisors (see below), whose sum is σ = 995712. Its totient is φ = 497808.

The previous prime is 725999. The next prime is 726007. The reversal of 726005 is 500627.

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 726005 - 2⁸ = 725749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726007) 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, 10337 + ... + 10406.

It is an arithmetic number, because the mean of its divisors is an integer number (124464).

2⁷²⁶⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

726005 is a deficient number, since it is larger than the sum of its proper divisors (269707).

726005 is a wasteful number, since it uses less digits than its factorization.

726005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20755.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 726005 is about 852.0592702389. The cubic root of 726005 is about 89.8765797980.

The spelling of 726005 in words is "seven hundred twenty-six thousand, five".