726626 has 4 divisors (see below), whose sum is σ = 1089942. Its totient is φ = 363312.

The previous prime is 726623. The next prime is 726629. The reversal of 726626 is 626627.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (726623) and next prime (726629).

It can be written as a sum of positive squares in only one way, i.e., 491401 + 235225 = 701^2 + 485^2 .

It is not an unprimeable number, because it can be changed into a prime (726623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181655 + ... + 181658.

2⁷²⁶⁶²⁶ is an apocalyptic number.

726626 is a deficient number, since it is larger than the sum of its proper divisors (363316).

726626 is a wasteful number, since it uses less digits than its factorization.

726626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363315.

The product of its digits is 6048, while the sum is 29.

The square root of 726626 is about 852.4236036150. The cubic root of 726626 is about 89.9021982855.

Subtracting from 726626 its reverse (626627), we obtain a palindrome (99999).

The spelling of 726626 in words is "seven hundred twenty-six thousand, six hundred twenty-six".