7446221 has 8 divisors (see below), whose sum is σ = 7931520. Its totient is φ = 6966208.

The previous prime is 7446211. The next prime is 7446223. The reversal of 7446221 is 1226447.

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

It is a cyclic number.

It is not a de Polignac number, because 7446221 - 2¹⁴ = 7429837 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7446223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1820 + ... + 4266.

It is an arithmetic number, because the mean of its divisors is an integer number (991440).

Almost surely, 2^7446221 is an apocalyptic number.

It is an amenable number.

7446221 is a deficient number, since it is larger than the sum of its proper divisors (485299).

7446221 is a wasteful number, since it uses less digits than its factorization.

7446221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2643.

The product of its digits is 2688, while the sum is 26.

The square root of 7446221 is about 2728.7764657443. The cubic root of 7446221 is about 195.2743978282.

It can be divided in two parts, 7446 and 221, that added together give a palindrome (7667).

The spelling of 7446221 in words is "seven million, four hundred forty-six thousand, two hundred twenty-one".