487668 has 12 divisors (see below), whose sum is σ = 1137920. Its totient is φ = 162552.

The previous prime is 487657. The next prime is 487681. The reversal of 487668 is 866784.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

487668 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 20308 + ... + 20331.

2⁴⁸⁷⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

487668 is an abundant number, since it is smaller than the sum of its proper divisors (650252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

487668 is a wasteful number, since it uses less digits than its factorization.

487668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40646 (or 40644 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 487668 is about 698.3322991241. The cubic root of 487668 is about 78.7120855534.

The spelling of 487668 in words is "four hundred eighty-seven thousand, six hundred sixty-eight".