489657 has 12 divisors (see below), whose sum is σ = 759696. Its totient is φ = 279720.

The previous prime is 489653. The next prime is 489659. The reversal of 489657 is 756984.

It is not a de Polignac number, because 489657 - 2² = 489653 is a prime.

489657 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (489653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1519 + ... + 1812.

It is an arithmetic number, because the mean of its divisors is an integer number (63308).

2⁴⁸⁹⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

489657 is a deficient number, since it is larger than the sum of its proper divisors (270039).

489657 is a wasteful number, since it uses less digits than its factorization.

489657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348 (or 3341 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 489657 is about 699.7549571100. The cubic root of 489657 is about 78.8189519551.

The spelling of 489657 in words is "four hundred eighty-nine thousand, six hundred fifty-seven".