726746 has 4 divisors (see below), whose sum is σ = 1090122. Its totient is φ = 363372.

The previous prime is 726707. The next prime is 726751. The reversal of 726746 is 647627.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 546121 + 180625 = 739^2 + 425^2 .

It is a Curzon number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 181685 + ... + 181688.

2⁷²⁶⁷⁴⁶ is an apocalyptic number.

726746 is a deficient number, since it is larger than the sum of its proper divisors (363376).

726746 is a wasteful number, since it uses less digits than its factorization.

726746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363375.

The product of its digits is 14112, while the sum is 32.

The square root of 726746 is about 852.4939882486. The cubic root of 726746 is about 89.9071470349.

The spelling of 726746 in words is "seven hundred twenty-six thousand, seven hundred forty-six".