7221606 has 32 divisors (see below), whose sum is σ = 16638720. Its totient is φ = 2046816.

The previous prime is 7221589. The next prime is 7221611. The reversal of 7221606 is 6061227.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5220 + ... + 6456.

It is an arithmetic number, because the mean of its divisors is an integer number (519960).

Almost surely, 2^7221606 is an apocalyptic number.

7221606 is an abundant number, since it is smaller than the sum of its proper divisors (9417114).

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

7221606 is a wasteful number, since it uses less digits than its factorization.

7221606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 7221606 is about 2687.3045975475. The cubic root of 7221606 is about 193.2908355526.

The spelling of 7221606 in words is "seven million, two hundred twenty-one thousand, six hundred six".