726345 has 12 divisors (see below), whose sum is σ = 1259076. Its totient is φ = 387360.

The previous prime is 726337. The next prime is 726367. The reversal of 726345 is 543627.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 278784 + 447561 = 528^2 + 669^2 .

It is not a de Polignac number, because 726345 - 2³ = 726337 is a prime.

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8026 + ... + 8115.

It is an arithmetic number, because the mean of its divisors is an integer number (104923).

2⁷²⁶³⁴⁵ is an apocalyptic number.

It is an amenable number.

726345 is a deficient number, since it is larger than the sum of its proper divisors (532731).

726345 is a wasteful number, since it uses less digits than its factorization.

726345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16152 (or 16149 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 726345 is about 852.2587635220. The cubic root of 726345 is about 89.8906078319.

The spelling of 726345 in words is "seven hundred twenty-six thousand, three hundred forty-five".