660650592 has 96 divisors (see below), whose sum is σ = 1987421184. Its totient is φ = 188236800.

The previous prime is 660650569. The next prime is 660650593. The reversal of 660650592 is 295056066.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 660650592.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660650593) 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 15 ways as a sum of consecutive naturals, for example, 288492 + ... + 290772.

It is an arithmetic number, because the mean of its divisors is an integer number (20702304).

Almost surely, 2^660650592 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 660650592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (993710592).

660650592 is an abundant number, since it is smaller than the sum of its proper divisors (1326770592).

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

660650592 is a wasteful number, since it uses less digits than its factorization.

660650592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732 (or 2724 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 660650592 is about 25703.1241680851. The cubic root of 660650592 is about 870.9447578086.

The spelling of 660650592 in words is "six hundred sixty million, six hundred fifty thousand, five hundred ninety-two".