5664640 has 64 divisors (see below), whose sum is σ = 13880160. Its totient is φ = 2209792.

The previous prime is 5664629. The next prime is 5664653. The reversal of 5664640 is 464665.

It is a tau number, because it is divible by the number of its divisors (64).

It is a plaindrome in base 13.

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33837 + ... + 34003.

Almost surely, 2^5664640 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 5664640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6940080).

5664640 is an abundant number, since it is smaller than the sum of its proper divisors (8215520).

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

5664640 is a wasteful number, since it uses less digits than its factorization.

5664640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 5664640 is about 2380.0504196340. The cubic root of 5664640 is about 178.2614514116.

The spelling of 5664640 in words is "five million, six hundred sixty-four thousand, six hundred forty".