489645 has 48 divisors (see below), whose sum is σ = 978432. Its totient is φ = 233280.

The previous prime is 489631. The next prime is 489653. The reversal of 489645 is 546984.

489645 is a `hidden beast` number, since 4 + 8 + 9 + 645 = 666.

489645 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 489645 - 2⁵ = 489613 is a prime.

It is a super-3 number, since 3×489645³ = 352180436136033375, which contains 333 as substring.

Its product of digits (34560) is a multiple of the sum of its prime factors (64).

489645 is strictly pandigital in base 7.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 489645.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15780 + ... + 15810.

It is an arithmetic number, because the mean of its divisors is an integer number (20384).

2⁴⁸⁹⁶⁴⁵ is an apocalyptic number.

489645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

489645 is a deficient number, since it is larger than the sum of its proper divisors (488787).

489645 is a wasteful number, since it uses less digits than its factorization.

489645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64 (or 52 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 489645 is about 699.7463826273. The cubic root of 489645 is about 78.8183080791.

The spelling of 489645 in words is "four hundred eighty-nine thousand, six hundred forty-five".