609724 has 12 divisors (see below), whose sum is σ = 1072624. Its totient is φ = 303264.

The previous prime is 609709. The next prime is 609743. The reversal of 609724 is 427906.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 609692 and 609701.

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 3 ways as a sum of consecutive naturals, for example, 1009 + ... + 1495.

2⁶⁰⁹⁷²⁴ is an apocalyptic number.

It is an amenable number.

609724 is a deficient number, since it is larger than the sum of its proper divisors (462900).

609724 is a wasteful number, since it uses less digits than its factorization.

609724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804 (or 802 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 609724 is about 780.8482567055. The cubic root of 609724 is about 84.7964680504.

The spelling of 609724 in words is "six hundred nine thousand, seven hundred twenty-four".