5664815421 has 8 divisors (see below), whose sum is σ = 7561904064. Its totient is φ = 3772135200.

The previous prime is 5664815419. The next prime is 5664815441. The reversal of 5664815421 is 1245184665.

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

It is not a de Polignac number, because 5664815421 - 2¹ = 5664815419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5664815441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1099105 + ... + 1104246.

It is an arithmetic number, because the mean of its divisors is an integer number (945238008).

Almost surely, 2^5664815421 is an apocalyptic number.

It is an amenable number.

5664815421 is a deficient number, since it is larger than the sum of its proper divisors (1897088643).

5664815421 is a wasteful number, since it uses less digits than its factorization.

5664815421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204211.

The product of its digits is 230400, while the sum is 42.

The square root of 5664815421 is about 75264.9680860890. The cubic root of 5664815421 is about 1782.6329150966.

The spelling of 5664815421 in words is "five billion, six hundred sixty-four million, eight hundred fifteen thousand, four hundred twenty-one".