4385664 has 112 divisors (see below), whose sum is σ = 13378320. Its totient is φ = 1430784.

The previous prime is 4385639. The next prime is 4385669. The reversal of 4385664 is 4665834.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4385669) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 93289 + ... + 93335.

Almost surely, 2^4385664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4385664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6689160).

4385664 is an abundant number, since it is smaller than the sum of its proper divisors (8992656).

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

4385664 is an frugal number, since it uses more digits than its factorization.

4385664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 52 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 4385664 is about 2094.1976984039. The cubic root of 4385664 is about 163.6860939759.

The spelling of 4385664 in words is "four million, three hundred eighty-five thousand, six hundred sixty-four".