609138068 has 24 divisors (see below), whose sum is σ = 1329029184. Its totient is φ = 237326400.

The previous prime is 609138029. The next prime is 609138097. The reversal of 609138068 is 860831906.

It is a happy number.

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, 988553 + ... + 989168.

It is an arithmetic number, because the mean of its divisors is an integer number (55376216).

Almost surely, 2^609138068 is an apocalyptic number.

It is an amenable number.

609138068 is an abundant number, since it is smaller than the sum of its proper divisors (719891116).

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

609138068 is a wasteful number, since it uses less digits than its factorization.

609138068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977743 (or 1977741 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 609138068 is about 24680.7225988219. The cubic root of 609138068 is about 847.6929680127.

The spelling of 609138068 in words is "six hundred nine million, one hundred thirty-eight thousand, sixty-eight".