387880660 has 24 divisors (see below), whose sum is σ = 831882240. Its totient is φ = 151850784.

The previous prime is 387880643. The next prime is 387880673. The reversal of 387880660 is 66088783.

It is a self number, because there is not a number n which added to its sum of digits gives 387880660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205380 + ... + 207259.

It is an arithmetic number, because the mean of its divisors is an integer number (34661760).

Almost surely, 2^387880660 is an apocalyptic number.

It is an amenable number.

387880660 is an abundant number, since it is smaller than the sum of its proper divisors (444001580).

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

387880660 is a wasteful number, since it uses less digits than its factorization.

387880660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412695 (or 412693 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 387880660 is about 19694.6860853378. The cubic root of 387880660 is about 729.2885167723.

The spelling of 387880660 in words is "three hundred eighty-seven million, eight hundred eighty thousand, six hundred sixty".