6622431421 has 8 divisors (see below), whose sum is σ = 6816187224. Its totient is φ = 6429453120.

The previous prime is 6622431407. The next prime is 6622431443. The reversal of 6622431421 is 1241342266.

It can be written as a sum of positive squares in 4 ways, for example, as 3814915225 + 2807516196 = 61765^2 + 52986^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6622431421 - 2⁹ = 6622430909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6622431121) 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, 177070 + ... + 211183.

It is an arithmetic number, because the mean of its divisors is an integer number (852023403).

Almost surely, 2^6622431421 is an apocalyptic number.

It is an amenable number.

6622431421 is a deficient number, since it is larger than the sum of its proper divisors (193755803).

6622431421 is a wasteful number, since it uses less digits than its factorization.

6622431421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388751.

The product of its digits is 13824, while the sum is 31.

The square root of 6622431421 is about 81378.3227954472. The cubic root of 6622431421 is about 1877.9001207862.

Adding to 6622431421 its reverse (1241342266), we get a palindrome (7863773687).

The spelling of 6622431421 in words is "six billion, six hundred twenty-two million, four hundred thirty-one thousand, four hundred twenty-one".