7221608 has 16 divisors (see below), whose sum is σ = 13594560. Its totient is φ = 3596400.

The previous prime is 7221589. The next prime is 7221611. The reversal of 7221608 is 8061227.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503 + ... + 3833.

It is an arithmetic number, because the mean of its divisors is an integer number (849660).

Almost surely, 2^7221608 is an apocalyptic number.

It is an amenable number.

7221608 is a deficient number, since it is larger than the sum of its proper divisors (6372952).

7221608 is a wasteful number, since it uses less digits than its factorization.

7221608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3608 (or 3604 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 7221608 is about 2687.3049696676. The cubic root of 7221608 is about 193.2908533964.

The spelling of 7221608 in words is "seven million, two hundred twenty-one thousand, six hundred eight".