487991685 has 8 divisors (see below), whose sum is σ = 780786720. Its totient is φ = 260262224.

The previous prime is 487991663. The next prime is 487991711. The reversal of 487991685 is 586199784.

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

It is a cyclic number.

It is not a de Polignac number, because 487991685 - 2⁹ = 487991173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16266375 + ... + 16266404.

It is an arithmetic number, because the mean of its divisors is an integer number (97598340).

Almost surely, 2^487991685 is an apocalyptic number.

It is an amenable number.

487991685 is a deficient number, since it is larger than the sum of its proper divisors (292795035).

487991685 is a wasteful number, since it uses less digits than its factorization.

487991685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32532787.

The product of its digits is 4354560, while the sum is 57.

The square root of 487991685 is about 22090.5338323907. The cubic root of 487991685 is about 787.2949650139.

The spelling of 487991685 in words is "four hundred eighty-seven million, nine hundred ninety-one thousand, six hundred eighty-five".