723166 has 16 divisors (see below), whose sum is σ = 1152000. Its totient is φ = 339768.

The previous prime is 723161. The next prime is 723167. The reversal of 723166 is 661327.

723166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 723166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723161) by changing a digit.

723166 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3535 + ... + 3733.

It is an arithmetic number, because the mean of its divisors is an integer number (72000).

2⁷²³¹⁶⁶ is an apocalyptic number.

723166 is a deficient number, since it is larger than the sum of its proper divisors (428834).

723166 is a wasteful number, since it uses less digits than its factorization.

723166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303.

The product of its digits is 1512, while the sum is 25.

The square root of 723166 is about 850.3916744654. The cubic root of 723166 is about 89.7592743938.

The spelling of 723166 in words is "seven hundred twenty-three thousand, one hundred sixty-six".