5664645432 has 24 divisors (see below), whose sum is σ = 15341748240. Its totient is φ = 1888215120.

The previous prime is 5664645431. The next prime is 5664645457. The reversal of 5664645432 is 2345464665.

It is a happy number.

5664645432 is a `hidden beast` number, since 5 + 66 + 46 + 4 + 543 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5664645431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39337744 + ... + 39337887.

It is an arithmetic number, because the mean of its divisors is an integer number (639239510).

Almost surely, 2^5664645432 is an apocalyptic number.

It is an amenable number.

5664645432 is an abundant number, since it is smaller than the sum of its proper divisors (9677102808).

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

5664645432 is a wasteful number, since it uses less digits than its factorization.

5664645432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78675643 (or 78675636 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 45.

The square root of 5664645432 is about 75263.8388072253. The cubic root of 5664645432 is about 1782.6150839173.

The spelling of 5664645432 in words is "five billion, six hundred sixty-four million, six hundred forty-five thousand, four hundred thirty-two".