6651222 has 8 divisors (see below), whose sum is σ = 13302456. Its totient is φ = 2217072.

The previous prime is 6651221. The next prime is 6651223. The reversal of 6651222 is 2221566.

It is an interprime number because it is at equal distance from previous prime (6651221) and next prime (6651223).

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

6651222 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 6651192 and 6651201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6651221) 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, 554263 + ... + 554274.

It is an arithmetic number, because the mean of its divisors is an integer number (1662807).

Almost surely, 2^6651222 is an apocalyptic number.

6651222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6651222 is a wasteful number, since it uses less digits than its factorization.

6651222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108542.

The product of its digits is 1440, while the sum is 24.

The square root of 6651222 is about 2578.9963163991. The cubic root of 6651222 is about 188.0617535174.

Adding to 6651222 its reverse (2221566), we get a palindrome (8872788).

The spelling of 6651222 in words is "six million, six hundred fifty-one thousand, two hundred twenty-two".