7068221 has 4 divisors (see below), whose sum is σ = 7259292. Its totient is φ = 6877152.

The previous prime is 7068203. The next prime is 7068223. The reversal of 7068221 is 1228607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1228607 = 17 ⋅72271.

It can be written as a sum of positive squares in 2 ways, for example, as 6832996 + 235225 = 2614^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 7068221 - 2⁶ = 7068157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7068223) 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, 95480 + ... + 95553.

It is an arithmetic number, because the mean of its divisors is an integer number (1814823).

Almost surely, 2^7068221 is an apocalyptic number.

It is an amenable number.

7068221 is a deficient number, since it is larger than the sum of its proper divisors (191071).

7068221 is a wasteful number, since it uses less digits than its factorization.

7068221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191070.

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

The square root of 7068221 is about 2658.6126081097. The cubic root of 7068221 is about 191.9125487882.

It can be divided in two parts, 7068 and 221, that multiplied together give a triangular number (1562028 = T₁₇₆₇).

The spelling of 7068221 in words is "seven million, sixty-eight thousand, two hundred twenty-one".