664120152 has 96 divisors (see below), whose sum is σ = 1847102400. Its totient is φ = 215465472.

The previous prime is 664120151. The next prime is 664120153. The reversal of 664120152 is 251021466.

664120152 is a `hidden beast` number, since 6 + 641 + 2 + 0 + 15 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (664120151) and next prime (664120153).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664120151) 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, 774508 + ... + 775364.

It is an arithmetic number, because the mean of its divisors is an integer number (19240650).

Almost surely, 2^664120152 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 664120152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (923551200).

664120152 is an abundant number, since it is smaller than the sum of its proper divisors (1182982248).

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

664120152 is a wasteful number, since it uses less digits than its factorization.

664120152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145 (or 1138 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 664120152 is about 25770.5287489411. The cubic root of 664120152 is about 872.4667527554.

The spelling of 664120152 in words is "six hundred sixty-four million, one hundred twenty thousand, one hundred fifty-two".