660860480 has 168 divisors, whose sum is σ = 1864425024. Its totient is φ = 218557440.

The previous prime is 660860477. The next prime is 660860491. The reversal of 660860480 is 84068066.

660860480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 2152487 + ... + 2152793.

It is an arithmetic number, because the mean of its divisors is an integer number (11097768).

Almost surely, 2^660860480 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 660860480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (932212512).

660860480 is an abundant number, since it is smaller than the sum of its proper divisors (1203564544).

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

660860480 is a wasteful number, since it uses less digits than its factorization.

660860480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 660860480 is about 25707.2067716428. The cubic root of 660860480 is about 871.0369807882.

The spelling of 660860480 in words is "six hundred sixty million, eight hundred sixty thousand, four hundred eighty".