724668 has 24 divisors (see below), whose sum is σ = 1932672. Its totient is φ = 207024.

The previous prime is 724651. The next prime is 724721. The reversal of 724668 is 866427.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 4230 + ... + 4397.

It is an arithmetic number, because the mean of its divisors is an integer number (80528).

2⁷²⁴⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

724668 is an abundant number, since it is smaller than the sum of its proper divisors (1208004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

724668 is a wasteful number, since it uses less digits than its factorization.

724668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8641 (or 8639 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 724668 is about 851.2743388591. The cubic root of 724668 is about 89.8213741050.

The spelling of 724668 in words is "seven hundred twenty-four thousand, six hundred sixty-eight".