659441664 has 288 divisors, whose sum is σ = 2299752000. Its totient is φ = 177831936.

The previous prime is 659441647. The next prime is 659441669. The reversal of 659441664 is 466144956.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659441669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2451322 + ... + 2451590.

It is an arithmetic number, because the mean of its divisors is an integer number (7985250).

Almost surely, 2^659441664 is an apocalyptic number.

659441664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 659441664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1149876000).

659441664 is an abundant number, since it is smaller than the sum of its proper divisors (1640310336).

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

659441664 is a wasteful number, since it uses less digits than its factorization.

659441664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 300 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 659441664 is about 25679.5962585084. The cubic root of 659441664 is about 870.4131846330.

The spelling of 659441664 in words is "six hundred fifty-nine million, four hundred forty-one thousand, six hundred sixty-four".