487665387 has 16 divisors (see below), whose sum is σ = 788146560. Its totient is φ = 295554600.

The previous prime is 487665379. The next prime is 487665397. The reversal of 487665387 is 783566784.

487665387 is a `hidden beast` number, since 48 + 7 + 66 + 538 + 7 = 666.

It is not a de Polignac number, because 487665387 - 2³ = 487665379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (487665307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 820689 + ... + 821282.

It is an arithmetic number, because the mean of its divisors is an integer number (49259160).

Almost surely, 2^487665387 is an apocalyptic number.

487665387 is a deficient number, since it is larger than the sum of its proper divisors (300481173).

487665387 is a wasteful number, since it uses less digits than its factorization.

487665387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641991 (or 1641985 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The square root of 487665387 is about 22083.1471262590. The cubic root of 487665387 is about 787.1194496932.

The spelling of 487665387 in words is "four hundred eighty-seven million, six hundred sixty-five thousand, three hundred eighty-seven".