489677664 has 48 divisors (see below), whose sum is σ = 1469035008. Its totient is φ = 139907712.

The previous prime is 489677663. The next prime is 489677677. The reversal of 489677664 is 466776984.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489677663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363672 + ... + 365015.

It is an arithmetic number, because the mean of its divisors is an integer number (30604896).

Almost surely, 2^489677664 is an apocalyptic number.

It is an amenable number.

489677664 is an abundant number, since it is smaller than the sum of its proper divisors (979357344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

489677664 is a wasteful number, since it uses less digits than its factorization.

489677664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728707 (or 728699 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 57.

The square root of 489677664 is about 22128.6615953157. The cubic root of 489677664 is about 788.2006068487.

The spelling of 489677664 in words is "four hundred eighty-nine million, six hundred seventy-seven thousand, six hundred sixty-four".