660759552 has 88 divisors (see below), whose sum is σ = 1956932000. Its totient is φ = 220243968.

The previous prime is 660759529. The next prime is 660759557. The reversal of 660759552 is 255957066.

660759552 is a `hidden beast` number, since 6 + 6 + 0 + 7 + 595 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 660759498 and 660759507.

It is not an unprimeable number, because it can be changed into a prime (660759557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15699 + ... + 39597.

Almost surely, 2^660759552 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 660759552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (978466000).

660759552 is an abundant number, since it is smaller than the sum of its proper divisors (1296172448).

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

660759552 is a wasteful number, since it uses less digits than its factorization.

660759552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23928 (or 23904 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 45.

The square root of 660759552 is about 25705.2436673921. The cubic root of 660759552 is about 870.9926363319.

The spelling of 660759552 in words is "six hundred sixty million, seven hundred fifty-nine thousand, five hundred fifty-two".