487217857 has 8 divisors (see below), whose sum is σ = 559040832. Its totient is φ = 415950000.

The previous prime is 487217851. The next prime is 487217897. The reversal of 487217857 is 758712784.

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 487217857 - 2³ = 487217849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 487217857.

It is not an unprimeable number, because it can be changed into a prime (487217851) by changing a digit.

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, 136894 + ... + 140407.

It is an arithmetic number, because the mean of its divisors is an integer number (69880104).

Almost surely, 2^487217857 is an apocalyptic number.

It is an amenable number.

487217857 is a deficient number, since it is larger than the sum of its proper divisors (71822975).

487217857 is a wasteful number, since it uses less digits than its factorization.

487217857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277559.

The product of its digits is 878080, while the sum is 49.

The square root of 487217857 is about 22073.0119603103. The cubic root of 487217857 is about 786.8785964444.

The spelling of 487217857 in words is "four hundred eighty-seven million, two hundred seventeen thousand, eight hundred fifty-seven".