487666 has 8 divisors (see below), whose sum is σ = 738540. Its totient is φ = 241488.

The previous prime is 487657. The next prime is 487681. The reversal of 487666 is 666784.

It can be written as a sum of positive squares in 2 ways, for example, as 455625 + 32041 = 675^2 + 179^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 901 + ... + 1336.

2⁴⁸⁷⁶⁶⁶ is an apocalyptic number.

487666 is a deficient number, since it is larger than the sum of its proper divisors (250874).

487666 is a wasteful number, since it uses less digits than its factorization.

487666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348.

The product of its digits is 48384, while the sum is 37.

The square root of 487666 is about 698.3308671396. The cubic root of 487666 is about 78.7119779499.

The spelling of 487666 in words is "four hundred eighty-seven thousand, six hundred sixty-six".