723418 has 8 divisors (see below), whose sum is σ = 1149012. Its totient is φ = 340416.

The previous prime is 723413. The next prime is 723421. The reversal of 723418 is 814327.

723418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 710649 + 12769 = 843^2 + 113^2 .

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

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 = 723392 and 723401.

It is not an unprimeable number, because it can be changed into a prime (723413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10605 + ... + 10672.

2⁷²³⁴¹⁸ is an apocalyptic number.

723418 is a deficient number, since it is larger than the sum of its proper divisors (425594).

723418 is a wasteful number, since it uses less digits than its factorization.

723418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21296.

The product of its digits is 1344, while the sum is 25.

The square root of 723418 is about 850.5398285795. The cubic root of 723418 is about 89.7696992526.

Subtracting 723418 from its reverse (814327), we obtain a palindrome (90909).

The spelling of 723418 in words is "seven hundred twenty-three thousand, four hundred eighteen".