660850880 has 56 divisors (see below), whose sum is σ = 1576132992. Its totient is φ = 263923712.

The previous prime is 660850849. The next prime is 660850919. The reversal of 660850880 is 88058066.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 274964 + ... + 277356.

It is an arithmetic number, because the mean of its divisors is an integer number (28145232).

Almost surely, 2^660850880 is an apocalyptic number.

It is an amenable number.

660850880 is an abundant number, since it is smaller than the sum of its proper divisors (915282112).

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

660850880 is a wasteful number, since it uses less digits than its factorization.

660850880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3273 (or 3263 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 660850880 is about 25707.0200528961. The cubic root of 660850880 is about 871.0327630571.

The spelling of 660850880 in words is "six hundred sixty million, eight hundred fifty thousand, eight hundred eighty".