724678 has 4 divisors (see below), whose sum is σ = 1087020. Its totient is φ = 362338.

The previous prime is 724651. The next prime is 724721. The reversal of 724678 is 876427.

724678 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.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181168 + ... + 181171.

It is an arithmetic number, because the mean of its divisors is an integer number (271755).

2⁷²⁴⁶⁷⁸ is an apocalyptic number.

724678 is a deficient number, since it is larger than the sum of its proper divisors (362342).

724678 is a wasteful number, since it uses less digits than its factorization.

724678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362341.

The product of its digits is 18816, while the sum is 34.

The square root of 724678 is about 851.2802123860. The cubic root of 724678 is about 89.8217872642.

The spelling of 724678 in words is "seven hundred twenty-four thousand, six hundred seventy-eight".