726685 has 16 divisors (see below), whose sum is σ = 933120. Its totient is φ = 542080.

The previous prime is 726679. The next prime is 726689. The reversal of 726685 is 586627.

It is not a de Polignac number, because 726685 - 2¹³ = 718493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 726685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726689) 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 15 ways as a sum of consecutive naturals, for example, 8121 + ... + 8209.

It is an arithmetic number, because the mean of its divisors is an integer number (58320).

2⁷²⁶⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

726685 is a deficient number, since it is larger than the sum of its proper divisors (206435).

726685 is a wasteful number, since it uses less digits than its factorization.

726685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188.

The product of its digits is 20160, while the sum is 34.

The square root of 726685 is about 852.4582101194. The cubic root of 726685 is about 89.9046314887.

The spelling of 726685 in words is "seven hundred twenty-six thousand, six hundred eighty-five".