723613 has 8 divisors (see below), whose sum is σ = 796320. Its totient is φ = 652080.

The previous prime is 723607. The next prime is 723617. The reversal of 723613 is 316327.

723613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 723613 - 2⁹ = 723101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1518 + ... + 1936.

It is an arithmetic number, because the mean of its divisors is an integer number (99540).

2⁷²³⁶¹³ is an apocalyptic number.

It is an amenable number.

723613 is a deficient number, since it is larger than the sum of its proper divisors (72707).

723613 is a wasteful number, since it uses less digits than its factorization.

723613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587.

The product of its digits is 756, while the sum is 22.

The square root of 723613 is about 850.6544539353. The cubic root of 723613 is about 89.7777644462. Note that the first 4 decimals are identical.

The spelling of 723613 in words is "seven hundred twenty-three thousand, six hundred thirteen".