723493 has 2 divisors, whose sum is σ = 723494. Its totient is φ = 723492.

The previous prime is 723491. The next prime is 723529. The reversal of 723493 is 394327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 717409 + 6084 = 847^2 + 78^2 .

It is an emirp because it is prime and its reverse (394327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 723493 - 2¹ = 723491 is a prime.

Together with 723491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (723491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361746 + 361747.

It is an arithmetic number, because the mean of its divisors is an integer number (361747).

2⁷²³⁴⁹³ is an apocalyptic number.

It is an amenable number.

723493 is a deficient number, since it is larger than the sum of its proper divisors (1).

723493 is an equidigital number, since it uses as much as digits as its factorization.

723493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 28.

The square root of 723493 is about 850.5839170828. The cubic root of 723493 is about 89.7728014216.

It can be divided in two parts, 7 and 23493, that multiplied together give a triangular number (164451 = T₅₇₃).

The spelling of 723493 in words is "seven hundred twenty-three thousand, four hundred ninety-three".