7221966 has 8 divisors (see below), whose sum is σ = 14443944. Its totient is φ = 2407320.

The previous prime is 7221961. The next prime is 7221967. The reversal of 7221966 is 6691227.

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

7221966 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601825 + ... + 601836.

It is an arithmetic number, because the mean of its divisors is an integer number (1805493).

Almost surely, 2^7221966 is an apocalyptic number.

7221966 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.

7221966 is a wasteful number, since it uses less digits than its factorization.

7221966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203666.

The product of its digits is 9072, while the sum is 33.

The square root of 7221966 is about 2687.3715783270. The cubic root of 7221966 is about 193.2940473749.

The spelling of 7221966 in words is "seven million, two hundred twenty-one thousand, nine hundred sixty-six".