723401 has 8 divisors (see below), whose sum is σ = 875520. Its totient is φ = 583488.

The previous prime is 723391. The next prime is 723407. The reversal of 723401 is 104327.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 723401 - 2⁶ = 723337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 723401.

It is not an unprimeable number, because it can be changed into a prime (723407) 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, 2921 + ... + 3158.

It is an arithmetic number, because the mean of its divisors is an integer number (109440).

2⁷²³⁴⁰¹ is an apocalyptic number.

It is an amenable number.

723401 is a deficient number, since it is larger than the sum of its proper divisors (152119).

723401 is a wasteful number, since it uses less digits than its factorization.

723401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6103.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 723401 is about 850.5298348677. The cubic root of 723401 is about 89.7689960644.

Adding to 723401 its reverse (104327), we get a palindrome (827728).

The spelling of 723401 in words is "seven hundred twenty-three thousand, four hundred one", and thus it is an iban number.