7643222 has 8 divisors (see below), whose sum is σ = 11963376. Its totient is φ = 3655432.

The previous prime is 7643219. The next prime is 7643227. The reversal of 7643222 is 2223467.

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

It is a super-3 number, since 3×7643222³ (a number of 22 digits) contains 333 as substring.

It is a d-powerful number, because it can be written as 7⁸ + 6⁷ + 4³ + 3¹³ + 2 + 2¹¹ + 2¹¹ .

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 7643191 and 7643200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7643227) 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, 83033 + ... + 83124.

It is an arithmetic number, because the mean of its divisors is an integer number (1495422).

Almost surely, 2^7643222 is an apocalyptic number.

7643222 is a deficient number, since it is larger than the sum of its proper divisors (4320154).

7643222 is a wasteful number, since it uses less digits than its factorization.

7643222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166182.

The product of its digits is 4032, while the sum is 26.

The square root of 7643222 is about 2764.6377701247. The cubic root of 7643222 is about 196.9815231711.

Adding to 7643222 its reverse (2223467), we get a palindrome (9866689).

The spelling of 7643222 in words is "seven million, six hundred forty-three thousand, two hundred twenty-two".