723255 has 16 divisors (see below), whose sum is σ = 1246560. Its totient is φ = 355968.

The previous prime is 723227. The next prime is 723257. The reversal of 723255 is 552327.

723255 = 13² + 14² + ... + 129².

723255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 723255 - 2⁷ = 723127 is a prime.

723255 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 723255.

It is not an unprimeable number, because it can be changed into a prime (723257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1660 + ... + 2049.

It is an arithmetic number, because the mean of its divisors is an integer number (77910).

2⁷²³²⁵⁵ is an apocalyptic number.

723255 is a deficient number, since it is larger than the sum of its proper divisors (523305).

723255 is a wasteful number, since it uses less digits than its factorization.

723255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730.

The product of its digits is 2100, while the sum is 24.

The square root of 723255 is about 850.4440016838. Note that the first 3 decimals coincide. The cubic root of 723255 is about 89.7629564657.

The spelling of 723255 in words is "seven hundred twenty-three thousand, two hundred fifty-five".