5664645 has 48 divisors (see below), whose sum is σ = 11481600. Its totient is φ = 2582496.

The previous prime is 5664629. The next prime is 5664653. The reversal of 5664645 is 5464665.

It is a happy number.

5664645 is a `hidden beast` number, since 5 + 6 + 6 + 4 + 645 = 666.

5664645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5664645 - 2⁴ = 5664629 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15252 + ... + 15618.

It is an arithmetic number, because the mean of its divisors is an integer number (239200).

Almost surely, 2^5664645 is an apocalyptic number.

It is an amenable number.

5664645 is an abundant number, since it is smaller than the sum of its proper divisors (5816955).

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

5664645 is a wasteful number, since it uses less digits than its factorization.

5664645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 382 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 5664645 is about 2380.0514700317. The cubic root of 5664645 is about 178.2615038602.

The spelling of 5664645 in words is "five million, six hundred sixty-four thousand, six hundred forty-five".