723743 has 4 divisors (see below), whose sum is σ = 728688. Its totient is φ = 718800.

The previous prime is 723739. The next prime is 723761. The reversal of 723743 is 347327.

723743 is nontrivially palindromic in base 7.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 347327 = 17 ⋅20431.

It is a cyclic number.

It is not a de Polignac number, because 723743 - 2² = 723739 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723043) 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 in 3 ways as a sum of consecutive naturals, for example, 2246 + ... + 2547.

It is an arithmetic number, because the mean of its divisors is an integer number (182172).

2⁷²³⁷⁴³ is an apocalyptic number.

723743 is a deficient number, since it is larger than the sum of its proper divisors (4945).

723743 is a wasteful number, since it uses less digits than its factorization.

723743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4944.

The product of its digits is 3528, while the sum is 26.

The square root of 723743 is about 850.7308622590. The cubic root of 723743 is about 89.7831404370.

The spelling of 723743 in words is "seven hundred twenty-three thousand, seven hundred forty-three", and thus it is an iban number.