487665 has 12 divisors (see below), whose sum is σ = 845364. Its totient is φ = 260064.

The previous prime is 487657. The next prime is 487681. The reversal of 487665 is 566784.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 138384 + 349281 = 372^2 + 591^2 .

It is not a de Polignac number, because 487665 - 2³ = 487657 is a prime.

It is a nialpdrome in base 15.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 5374 + ... + 5463.

It is an arithmetic number, because the mean of its divisors is an integer number (70447).

2⁴⁸⁷⁶⁶⁵ is an apocalyptic number.

487665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

487665 is a deficient number, since it is larger than the sum of its proper divisors (357699).

487665 is a wasteful number, since it uses less digits than its factorization.

487665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10848 (or 10845 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 487665 is about 698.3301511463. The cubic root of 487665 is about 78.7119241480.

The spelling of 487665 in words is "four hundred eighty-seven thousand, six hundred sixty-five".