726655 has 8 divisors (see below), whose sum is σ = 918000. Its totient is φ = 550656.

The previous prime is 726647. The next prime is 726659. The reversal of 726655 is 556627.

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 726655 - 2³ = 726647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3730 + ... + 3919.

It is an arithmetic number, because the mean of its divisors is an integer number (114750).

2⁷²⁶⁶⁵⁵ is an apocalyptic number.

726655 is a deficient number, since it is larger than the sum of its proper divisors (191345).

726655 is a wasteful number, since it uses less digits than its factorization.

726655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7673.

The product of its digits is 12600, while the sum is 31.

The square root of 726655 is about 852.4406137673. The cubic root of 726655 is about 89.9033942832.

It can be divided in two parts, 7 and 26655, that added together give a palindrome (26662).

The spelling of 726655 in words is "seven hundred twenty-six thousand, six hundred fifty-five".