724406 has 4 divisors (see below), whose sum is σ = 1086612. Its totient is φ = 362202.

The previous prime is 724403. The next prime is 724433. The reversal of 724406 is 604427.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181100 + ... + 181103.

It is an arithmetic number, because the mean of its divisors is an integer number (271653).

2⁷²⁴⁴⁰⁶ is an apocalyptic number.

724406 is a deficient number, since it is larger than the sum of its proper divisors (362206).

724406 is a wasteful number, since it uses less digits than its factorization.

724406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362205.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 724406 is about 851.1204380110. The cubic root of 724406 is about 89.8105479811.

The spelling of 724406 in words is "seven hundred twenty-four thousand, four hundred six".