7221696 has 56 divisors (see below), whose sum is σ = 19781520. Its totient is φ = 2322432.

The previous prime is 7221689. The next prime is 7221707. The reversal of 7221696 is 6961227.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4920 + ... + 6216.

Almost surely, 2^7221696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7221696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9890760).

7221696 is an abundant number, since it is smaller than the sum of its proper divisors (12559824).

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

7221696 is a wasteful number, since it uses less digits than its factorization.

7221696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341 (or 1331 counting only the distinct ones).

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

The square root of 7221696 is about 2687.3213428989. The cubic root of 7221696 is about 193.2916385182.

The spelling of 7221696 in words is "seven million, two hundred twenty-one thousand, six hundred ninety-six".