487643 has 4 divisors (see below), whose sum is σ = 525168. Its totient is φ = 450120.

The previous prime is 487637. The next prime is 487649. The reversal of 487643 is 346784.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (487637) and next prime (487649).

It is a cyclic number.

It is not a de Polignac number, because 487643 - 2⁸ = 487387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (487649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18743 + ... + 18768.

It is an arithmetic number, because the mean of its divisors is an integer number (131292).

2⁴⁸⁷⁶⁴³ is an apocalyptic number.

487643 is a deficient number, since it is larger than the sum of its proper divisors (37525).

487643 is a wasteful number, since it uses less digits than its factorization.

487643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37524.

The product of its digits is 16128, while the sum is 32.

The square root of 487643 is about 698.3143991069. The cubic root of 487643 is about 78.7107404882.

The spelling of 487643 in words is "four hundred eighty-seven thousand, six hundred forty-three".