723573 has 10 divisors (see below), whose sum is σ = 1081014. Its totient is φ = 482328.

The previous prime is 723563. The next prime is 723587. The reversal of 723573 is 375327.

723573 is digitally balanced in base 2 and base 7, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 544644 + 178929 = 738^2 + 423^2 .

It is a de Polignac number, because none of the positive numbers 2^k-723573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 7² + 2¹⁹ + 5 + 3⁹ + 7⁴ + 3¹¹ .

723573 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723553) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4386 + ... + 4547.

2⁷²³⁵⁷³ is an apocalyptic number.

It is an amenable number.

723573 is a deficient number, since it is larger than the sum of its proper divisors (357441).

723573 is an equidigital number, since it uses as much as digits as its factorization.

723573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8945 (or 8936 counting only the distinct ones).

The product of its digits is 4410, while the sum is 27.

The square root of 723573 is about 850.6309423011. The cubic root of 723573 is about 89.7761101656.

It can be divided in two parts, 723 and 573, that added together give a 4-th power (1296 = 6⁴).

The spelling of 723573 in words is "seven hundred twenty-three thousand, five hundred seventy-three".