8644464 has 60 divisors (see below), whose sum is σ = 24402456. Its totient is φ = 2856576.

The previous prime is 8644457. The next prime is 8644477. The reversal of 8644464 is 4644468.

8644464 is a `hidden beast` number, since 8 + 644 + 4 + 6 + 4 = 666.

8644464 is nontrivially palindromic in base 11.

8644464 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24739 + ... + 25085.

Almost surely, 2^8644464 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 8644464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12201228).

8644464 is an abundant number, since it is smaller than the sum of its proper divisors (15757992).

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

8644464 is a wasteful number, since it uses less digits than its factorization.

8644464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 525 counting only the distinct ones).

The product of its digits is 73728, while the sum is 36.

The square root of 8644464 is about 2940.1469351038. The cubic root of 8644464 is about 205.2324470196.

The spelling of 8644464 in words is "eight million, six hundred forty-four thousand, four hundred sixty-four".