587665 has 8 divisors (see below), whose sum is σ = 759528. Its totient is φ = 433920.

The previous prime is 587659. The next prime is 587669. The reversal of 587665 is 566785.

It can be written as a sum of positive squares in 4 ways, for example, as 123904 + 463761 = 352^2 + 681^2 .

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

It is not a de Polignac number, because 587665 - 2⁵ = 587633 is a prime.

It is a Duffinian number.

587665 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (587669) 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, 4456 + ... + 4585.

It is an arithmetic number, because the mean of its divisors is an integer number (94941).

2⁵⁸⁷⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

587665 is a deficient number, since it is larger than the sum of its proper divisors (171863).

587665 is a wasteful number, since it uses less digits than its factorization.

587665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9059.

The product of its digits is 50400, while the sum is 37.

The square root of 587665 is about 766.5931124136. The cubic root of 587665 is about 83.7612741932.

The spelling of 587665 in words is "five hundred eighty-seven thousand, six hundred sixty-five".