723564 has 36 divisors (see below), whose sum is σ = 1856400. Its totient is φ = 237600.

The previous prime is 723563. The next prime is 723587. The reversal of 723564 is 465327.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

723564 is a modest number, since divided by 3564 gives 72 as remainder.

It is not an unprimeable number, because it can be changed into a prime (723563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3537 + ... + 3735.

2⁷²³⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

723564 is an abundant number, since it is smaller than the sum of its proper divisors (1132836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

723564 is a wasteful number, since it uses less digits than its factorization.

723564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 305 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 723564 is about 850.6256520938. The cubic root of 723564 is about 89.7757379441.

The spelling of 723564 in words is "seven hundred twenty-three thousand, five hundred sixty-four".