726344 has 8 divisors (see below), whose sum is σ = 1361910. Its totient is φ = 363168.

The previous prime is 726337. The next prime is 726367. The reversal of 726344 is 443627.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 722500 + 3844 = 850^2 + 62^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

726344 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45389 + ... + 45404.

2⁷²⁶³⁴⁴ is an apocalyptic number.

It is an amenable number.

726344 is a deficient number, since it is larger than the sum of its proper divisors (635566).

726344 is a wasteful number, since it uses less digits than its factorization.

726344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90799 (or 90795 counting only the distinct ones).

The product of its digits is 4032, while the sum is 26.

The square root of 726344 is about 852.2581768455. The cubic root of 726344 is about 89.8905665794.

The spelling of 726344 in words is "seven hundred twenty-six thousand, three hundred forty-four".