387655 has 16 divisors (see below), whose sum is σ = 499968. Its totient is φ = 288000.

The previous prime is 387641. The next prime is 387659. The reversal of 387655 is 556783.

It is a happy number.

It is not a de Polignac number, because 387655 - 2⁵ = 387623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 387655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387659) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6325 + ... + 6385.

It is an arithmetic number, because the mean of its divisors is an integer number (31248).

2³⁸⁷⁶⁵⁵ is an apocalyptic number.

387655 is a deficient number, since it is larger than the sum of its proper divisors (112313).

387655 is a wasteful number, since it uses less digits than its factorization.

387655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138.

The product of its digits is 25200, while the sum is 34.

The square root of 387655 is about 622.6194664480. The cubic root of 387655 is about 72.9147061604.

The spelling of 387655 in words is "three hundred eighty-seven thousand, six hundred fifty-five".