487391668 has 12 divisors (see below), whose sum is σ = 853251840. Its totient is φ = 243605432.

The previous prime is 487391633. The next prime is 487391677. The reversal of 487391668 is 866193784.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9646 + ... + 32677.

It is an arithmetic number, because the mean of its divisors is an integer number (71104320).

Almost surely, 2^487391668 is an apocalyptic number.

It is an amenable number.

487391668 is a deficient number, since it is larger than the sum of its proper divisors (365860172).

487391668 is a wasteful number, since it uses less digits than its factorization.

487391668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45206 (or 45204 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 52.

The square root of 487391668 is about 22076.9487928020. The cubic root of 487391668 is about 786.9721561619.

The spelling of 487391668 in words is "four hundred eighty-seven million, three hundred ninety-one thousand, six hundred sixty-eight".