380666660 has 24 divisors (see below), whose sum is σ = 872073216. Its totient is φ = 138424160.

The previous prime is 380666623. The next prime is 380666687. The reversal of 380666660 is 66666083.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 864932 + ... + 865371.

It is an arithmetic number, because the mean of its divisors is an integer number (36336384).

Almost surely, 2^380666660 is an apocalyptic number.

It is an amenable number.

380666660 is an abundant number, since it is smaller than the sum of its proper divisors (491406556).

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

380666660 is a wasteful number, since it uses less digits than its factorization.

380666660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730323 (or 1730321 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 41.

The square root of 380666660 is about 19510.6806647026. The cubic root of 380666660 is about 724.7389690492.

The spelling of 380666660 in words is "three hundred eighty million, six hundred sixty-six thousand, six hundred sixty".