609742 has 16 divisors (see below), whose sum is σ = 1058400. Its totient is φ = 258048.

The previous prime is 609709. The next prime is 609743. The reversal of 609742 is 247906.

It is a self number, because there is not a number n which added to its sum of digits gives 609742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609743) 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 in 7 ways as a sum of consecutive naturals, for example, 1134 + ... + 1582.

It is an arithmetic number, because the mean of its divisors is an integer number (66150).

2⁶⁰⁹⁷⁴² is an apocalyptic number.

609742 is a deficient number, since it is larger than the sum of its proper divisors (448658).

609742 is a wasteful number, since it uses less digits than its factorization.

609742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555.

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

The square root of 609742 is about 780.8597825474. The cubic root of 609742 is about 84.7973024833.

The spelling of 609742 in words is "six hundred nine thousand, seven hundred forty-two".