664111360 has 144 divisors (see below), whose sum is σ = 1756302912. Its totient is φ = 238592000.

The previous prime is 664111333. The next prime is 664111391. The reversal of 664111360 is 63111466.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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 15 ways as a sum of consecutive naturals, for example, 1421847 + ... + 1422313.

It is an arithmetic number, because the mean of its divisors is an integer number (12196548).

Almost surely, 2^664111360 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664111360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (878151456).

664111360 is an abundant number, since it is smaller than the sum of its proper divisors (1092191552).

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

664111360 is a wasteful number, since it uses less digits than its factorization.

664111360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 664111360 is about 25770.3581659239. The cubic root of 664111360 is about 872.4629026682.

The spelling of 664111360 in words is "six hundred sixty-four million, one hundred eleven thousand, three hundred sixty".