5966686221 has 8 divisors (see below), whose sum is σ = 7962798720. Its totient is φ = 3974182272.

The previous prime is 5966686211. The next prime is 5966686241. The reversal of 5966686221 is 1226866695.

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

It is not a de Polignac number, because 5966686221 - 2⁵ = 5966686189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5966686211) 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, 898276 + ... + 904893.

It is an arithmetic number, because the mean of its divisors is an integer number (995349840).

Almost surely, 2^5966686221 is an apocalyptic number.

It is an amenable number.

5966686221 is a deficient number, since it is larger than the sum of its proper divisors (1996112499).

5966686221 is a wasteful number, since it uses less digits than its factorization.

5966686221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804275.

The product of its digits is 1866240, while the sum is 51.

The square root of 5966686221 is about 77244.3280830379. The cubic root of 5966686221 is about 1813.7512852159.

The spelling of 5966686221 in words is "five billion, nine hundred sixty-six million, six hundred eighty-six thousand, two hundred twenty-one".