387617 has 6 divisors (see below), whose sum is σ = 413154. Its totient is φ = 362400.

The previous prime is 387613. The next prime is 387623. The reversal of 387617 is 716783.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 364816 + 22801 = 604^2 + 151^2 .

It is not a de Polignac number, because 387617 - 2² = 387613 is a prime.

It is a Duffinian number.

Its product of digits (7056) is a multiple of the sum of its prime divisors (168).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 387617.

It is not an unprimeable number, because it can be changed into a prime (387613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2492 + ... + 2642.

It is an arithmetic number, because the mean of its divisors is an integer number (68859).

2³⁸⁷⁶¹⁷ is an apocalyptic number.

It is an amenable number.

387617 is a deficient number, since it is larger than the sum of its proper divisors (25537).

387617 is an equidigital number, since it uses as much as digits as its factorization.

387617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 168 counting only the distinct ones).

The product of its digits is 7056, while the sum is 32.

The square root of 387617 is about 622.5889494683. The cubic root of 387617 is about 72.9123235871.

The spelling of 387617 in words is "three hundred eighty-seven thousand, six hundred seventeen".