723630 has 16 divisors (see below), whose sum is σ = 1736784. Its totient is φ = 192960.

The previous prime is 723623. The next prime is 723661. The reversal of 723630 is 36327.

723630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 723597 and 723606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12031 + ... + 12090.

It is an arithmetic number, because the mean of its divisors is an integer number (108549).

2⁷²³⁶³⁰ is an apocalyptic number.

723630 is an abundant number, since it is smaller than the sum of its proper divisors (1013154).

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

723630 is a wasteful number, since it uses less digits than its factorization.

723630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24131.

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 723630 is about 850.6644461831. The cubic root of 723630 is about 89.7784674970.

Adding to 723630 its reverse (36327), we get a palindrome (759957).

The spelling of 723630 in words is "seven hundred twenty-three thousand, six hundred thirty".