664050960 has 120 divisors (see below), whose sum is σ = 2312768640. Its totient is φ = 177075072.

The previous prime is 664050953. The next prime is 664050967. The reversal of 664050960 is 69050466.

It is a happy number.

664050960 is a `hidden beast` number, since 6 + 640 + 5 + 0 + 9 + 6 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (664050953) and next prime (664050967).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (664050967) 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 23 ways as a sum of consecutive naturals, for example, 2361 + ... + 36519.

It is an arithmetic number, because the mean of its divisors is an integer number (19273072).

Almost surely, 2^664050960 is an apocalyptic number.

664050960 is a gapful number since it is divisible by the number (60) 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 664050960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1156384320).

664050960 is an abundant number, since it is smaller than the sum of its proper divisors (1648717680).

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

664050960 is a wasteful number, since it uses less digits than its factorization.

664050960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34187 (or 34169 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 664050960 is about 25769.1862502486. The cubic root of 664050960 is about 872.4364521057.

It can be divided in two parts, 6640 and 50960, that added together give a square (57600 = 240²).

The spelling of 664050960 in words is "six hundred sixty-four million, fifty thousand, nine hundred sixty".