726145 has 8 divisors (see below), whose sum is σ = 995904. Its totient is φ = 497904.

The previous prime is 726139. The next prime is 726149. The reversal of 726145 is 541627.

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 726145 - 2³ = 726137 is a prime.

It is a super-2 number, since 2×726145² = 1054573122050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (726149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10339 + ... + 10408.

It is an arithmetic number, because the mean of its divisors is an integer number (124488).

2⁷²⁶¹⁴⁵ is an apocalyptic number.

It is an amenable number.

726145 is a deficient number, since it is larger than the sum of its proper divisors (269759).

726145 is a wasteful number, since it uses less digits than its factorization.

726145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20759.

The product of its digits is 1680, while the sum is 25.

The square root of 726145 is about 852.1414201880. The cubic root of 726145 is about 89.8823565776.

The spelling of 726145 in words is "seven hundred twenty-six thousand, one hundred forty-five".