726758 has 4 divisors (see below), whose sum is σ = 1090140. Its totient is φ = 363378.

The previous prime is 726751. The next prime is 726779. The reversal of 726758 is 857627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 857627 = 601 ⋅1427.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726751) 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 as a sum of consecutive naturals, namely, 181688 + ... + 181691.

It is an arithmetic number, because the mean of its divisors is an integer number (272535).

2⁷²⁶⁷⁵⁸ is an apocalyptic number.

726758 is a deficient number, since it is larger than the sum of its proper divisors (363382).

726758 is a wasteful number, since it uses less digits than its factorization.

726758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363381.

The product of its digits is 23520, while the sum is 35.

The square root of 726758 is about 852.5010263923. The cubic root of 726758 is about 89.9076418799.

The spelling of 726758 in words is "seven hundred twenty-six thousand, seven hundred fifty-eight".