387605866 has 16 divisors (see below), whose sum is σ = 584962560. Its totient is φ = 192622320.

The previous prime is 387605863. The next prime is 387605873. The reversal of 387605866 is 668506783.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (387605863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390631 + ... + 391621.

It is an arithmetic number, because the mean of its divisors is an integer number (36560160).

Almost surely, 2^387605866 is an apocalyptic number.

387605866 is a deficient number, since it is larger than the sum of its proper divisors (197356694).

387605866 is a wasteful number, since it uses less digits than its factorization.

387605866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 387605866 is about 19687.7085004832. The cubic root of 387605866 is about 729.1162546365.

The spelling of 387605866 in words is "three hundred eighty-seven million, six hundred five thousand, eight hundred sixty-six".