387566385 has 16 divisors (see below), whose sum is σ = 621221184. Its totient is φ = 206330432.

The previous prime is 387566381. The next prime is 387566393. The reversal of 387566385 is 583665783.

It is a cyclic number.

It is not a de Polignac number, because 387566385 - 2² = 387566381 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (387566381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14502 + ... + 31391.

It is an arithmetic number, because the mean of its divisors is an integer number (38826324).

Almost surely, 2^387566385 is an apocalyptic number.

It is an amenable number.

387566385 is a deficient number, since it is larger than the sum of its proper divisors (233654799).

387566385 is a wasteful number, since it uses less digits than its factorization.

387566385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46464.

The product of its digits is 3628800, while the sum is 51.

The square root of 387566385 is about 19686.7057935044. The cubic root of 387566385 is about 729.0914982032.

The spelling of 387566385 in words is "three hundred eighty-seven million, five hundred sixty-six thousand, three hundred eighty-five".