609000066 has 64 divisors (see below), whose sum is σ = 1375395840. Its totient is φ = 199720080.

The previous prime is 609000037. The next prime is 609000071. The reversal of 609000066 is 660000906.

It is a super-3 number, since 3×609000066³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 1240081 + ... + 1240571.

It is an arithmetic number, because the mean of its divisors is an integer number (21490560).

Almost surely, 2^609000066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 609000066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (687697920).

609000066 is an abundant number, since it is smaller than the sum of its proper divisors (766395774).

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

609000066 is a wasteful number, since it uses less digits than its factorization.

609000066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 609000066 is about 24677.9266957336. The cubic root of 609000066 is about 847.6289474091.

The spelling of 609000066 in words is "six hundred nine million, sixty-six", and thus it is an aban number.