660710448 has 120 divisors (see below), whose sum is σ = 1885981968. Its totient is φ = 215894016.

The previous prime is 660710363. The next prime is 660710527. The reversal of 660710448 is 844017066.

660710448 is a `hidden beast` number, since 6 + 607 + 1 + 0 + 4 + 48 = 666.

660710448 is nontrivially palindromic in base 15.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2110740 + ... + 2111052.

Almost surely, 2^660710448 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 660710448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (942990984).

660710448 is an abundant number, since it is smaller than the sum of its proper divisors (1225271520).

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

660710448 is a wasteful number, since it uses less digits than its factorization.

660710448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 660710448 is about 25704.2885137870. The cubic root of 660710448 is about 870.9710600102.

The spelling of 660710448 in words is "six hundred sixty million, seven hundred ten thousand, four hundred forty-eight".