664200650 has 24 divisors (see below), whose sum is σ = 1247417184. Its totient is φ = 263098800.

The previous prime is 664200643. The next prime is 664200673. The reversal of 664200650 is 56002466.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59336 + ... + 69635.

It is an arithmetic number, because the mean of its divisors is an integer number (51975716).

Almost surely, 2^664200650 is an apocalyptic number.

664200650 is a deficient number, since it is larger than the sum of its proper divisors (583216534).

664200650 is a wasteful number, since it uses less digits than its factorization.

664200650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129086 (or 129081 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 664200650 is about 25772.0905244414. The cubic root of 664200650 is about 872.5020018947.

The spelling of 664200650 in words is "six hundred sixty-four million, two hundred thousand, six hundred fifty".