6671369221 has 4 divisors (see below), whose sum is σ = 7277857344. Its totient is φ = 6064881100.

The previous prime is 6671369207. The next prime is 6671369227. The reversal of 6671369221 is 1229631766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6671369221 - 2⁵ = 6671369189 is a prime.

It is a super-2 number, since 2×6671369221² = 89014334565812293682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6671369227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303244045 + ... + 303244066.

It is an arithmetic number, because the mean of its divisors is an integer number (1819464336).

Almost surely, 2^6671369221 is an apocalyptic number.

It is an amenable number.

6671369221 is a deficient number, since it is larger than the sum of its proper divisors (606488123).

6671369221 is a wasteful number, since it uses less digits than its factorization.

6671369221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606488122.

The product of its digits is 163296, while the sum is 43.

The square root of 6671369221 is about 81678.4501628183. The cubic root of 6671369221 is about 1882.5144810579.

The spelling of 6671369221 in words is "six billion, six hundred seventy-one million, three hundred sixty-nine thousand, two hundred twenty-one".