609900664 has 16 divisors (see below), whose sum is σ = 1143828000. Its totient is φ = 304879872.

The previous prime is 609900661. The next prime is 609900673. The reversal of 609900664 is 466009906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609900661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56209 + ... + 66175.

It is an arithmetic number, because the mean of its divisors is an integer number (71489250).

Almost surely, 2^609900664 is an apocalyptic number.

It is an amenable number.

609900664 is a deficient number, since it is larger than the sum of its proper divisors (533927336).

609900664 is a wasteful number, since it uses less digits than its factorization.

609900664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17622 (or 17618 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 609900664 is about 24696.1669900412. The cubic root of 609900664 is about 848.0465702145.

The spelling of 609900664 in words is "six hundred nine million, nine hundred thousand, six hundred sixty-four".