609243668 has 24 divisors (see below), whose sum is σ = 1164953664. Its totient is φ = 276488000.

The previous prime is 609243659. The next prime is 609243689. The reversal of 609243668 is 866342906.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17768 + ... + 39168.

It is an arithmetic number, because the mean of its divisors is an integer number (48539736).

Almost surely, 2^609243668 is an apocalyptic number.

It is an amenable number.

609243668 is a deficient number, since it is larger than the sum of its proper divisors (555709996).

609243668 is a wasteful number, since it uses less digits than its factorization.

609243668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22063 (or 22061 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 609243668 is about 24682.8618275920. The cubic root of 609243668 is about 847.7419504519.

The spelling of 609243668 in words is "six hundred nine million, two hundred forty-three thousand, six hundred sixty-eight".