7364221 has 4 divisors (see below), whose sum is σ = 7563292. Its totient is φ = 7165152.

The previous prime is 7364219. The next prime is 7364233. The reversal of 7364221 is 1224637.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4575321 + 2788900 = 2139^2 + 1670^2 .

It is a cyclic number.

It is not a de Polignac number, because 7364221 - 2¹ = 7364219 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7364821) 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, 99480 + ... + 99553.

It is an arithmetic number, because the mean of its divisors is an integer number (1890823).

Almost surely, 2^7364221 is an apocalyptic number.

It is an amenable number.

7364221 is a deficient number, since it is larger than the sum of its proper divisors (199071).

7364221 is a wasteful number, since it uses less digits than its factorization.

7364221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199070.

The product of its digits is 2016, while the sum is 25.

The square root of 7364221 is about 2713.7098223649. The cubic root of 7364221 is about 194.5549438025.

Adding to 7364221 its reverse (1224637), we get a palindrome (8588858).

The spelling of 7364221 in words is "seven million, three hundred sixty-four thousand, two hundred twenty-one".