723427 has 4 divisors (see below), whose sum is σ = 730296. Its totient is φ = 716560.

The previous prime is 723421. The next prime is 723439. The reversal of 723427 is 724327.

723427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724327 = 229 ⋅3163.

It is a cyclic number.

It is not a de Polignac number, because 723427 - 2¹¹ = 721379 is a prime.

It is a d-powerful number, because it can be written as 7² + 2¹⁷ + 4⁸ + 3⁴ + 2¹⁹ + 7⁴ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (723421) 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, 3274 + ... + 3487.

It is an arithmetic number, because the mean of its divisors is an integer number (182574).

2⁷²³⁴²⁷ is an apocalyptic number.

723427 is a deficient number, since it is larger than the sum of its proper divisors (6869).

723427 is a wasteful number, since it uses less digits than its factorization.

723427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6868.

The product of its digits is 2352, while the sum is 25.

The square root of 723427 is about 850.5451193205. The cubic root of 723427 is about 89.7700715242.

Subtracting 723427 from its reverse (724327), we obtain a square (900 = 30²).

The spelling of 723427 in words is "seven hundred twenty-three thousand, four hundred twenty-seven", and thus it is an iban number.