723633 has 12 divisors (see below), whose sum is σ = 1000944. Its totient is φ = 465000.

The previous prime is 723623. The next prime is 723661. The reversal of 723633 is 336327.

It is not a de Polignac number, because 723633 - 2⁴ = 723617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (723623) 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, 2758 + ... + 3008.

It is an arithmetic number, because the mean of its divisors is an integer number (83412).

2⁷²³⁶³³ is an apocalyptic number.

It is an amenable number.

723633 is a deficient number, since it is larger than the sum of its proper divisors (277311).

723633 is a wasteful number, since it uses less digits than its factorization.

723633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 285 counting only the distinct ones).

The product of its digits is 2268, while the sum is 24.

The square root of 723633 is about 850.6662095088. Note that the first 3 decimals coincide. The cubic root of 723633 is about 89.7785915636.

The spelling of 723633 in words is "seven hundred twenty-three thousand, six hundred thirty-three".