387505 has 8 divisors (see below), whose sum is σ = 489600. Its totient is φ = 293616.

The previous prime is 387503. The next prime is 387509. The reversal of 387505 is 505783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 387505 - 2¹ = 387503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (387503) 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 7 ways as a sum of consecutive naturals, for example, 1945 + ... + 2134.

It is an arithmetic number, because the mean of its divisors is an integer number (61200).

2³⁸⁷⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

387505 is a deficient number, since it is larger than the sum of its proper divisors (102095).

387505 is a wasteful number, since it uses less digits than its factorization.

387505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 387505 is about 622.4989959831. The cubic root of 387505 is about 72.9053003598.

The spelling of 387505 in words is "three hundred eighty-seven thousand, five hundred five".