660130248 has 64 divisors (see below), whose sum is σ = 1711886400. Its totient is φ = 211877120.

The previous prime is 660130201. The next prime is 660130259. The reversal of 660130248 is 842031066.

It is a Cunningham number, because it is equal to 25693²-1.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307258 + ... + 309398.

It is an arithmetic number, because the mean of its divisors is an integer number (26748225).

Almost surely, 2^660130248 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 660130248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (855943200).

660130248 is an abundant number, since it is smaller than the sum of its proper divisors (1051756152).

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

660130248 is a wasteful number, since it uses less digits than its factorization.

660130248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2622 (or 2618 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 660130248 is about 25692.9999805394. Note that the first 4 decimals coincide. The cubic root of 660130248 is about 870.7160388671.

The spelling of 660130248 in words is "six hundred sixty million, one hundred thirty thousand, two hundred forty-eight".