5665984421 has 8 divisors (see below), whose sum is σ = 5871005184. Its totient is φ = 5462354160.

The previous prime is 5665984399. The next prime is 5665984439. The reversal of 5665984421 is 1244895665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5665984421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5665984421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665984021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339326 + ... + 355631.

It is an arithmetic number, because the mean of its divisors is an integer number (733875648).

Almost surely, 2^5665984421 is an apocalyptic number.

It is an amenable number.

5665984421 is a deficient number, since it is larger than the sum of its proper divisors (205020763).

5665984421 is a wasteful number, since it uses less digits than its factorization.

5665984421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695251.

The product of its digits is 2073600, while the sum is 50.

The square root of 5665984421 is about 75272.7335826194. The cubic root of 5665984421 is about 1782.7555289504.

The spelling of 5665984421 in words is "five billion, six hundred sixty-five million, nine hundred eighty-four thousand, four hundred twenty-one".