7386221 has 4 divisors (see below), whose sum is σ = 7399392. Its totient is φ = 7373052.

The previous prime is 7386209. The next prime is 7386227. The reversal of 7386221 is 1226837.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1226837 = 67 ⋅18311.

It is a cyclic number.

It is not a de Polignac number, because 7386221 - 2⁶ = 7386157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7386227) 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, 5705 + ... + 6878.

It is an arithmetic number, because the mean of its divisors is an integer number (1849848).

Almost surely, 2^7386221 is an apocalyptic number.

It is an amenable number.

7386221 is a deficient number, since it is larger than the sum of its proper divisors (13171).

7386221 is a wasteful number, since it uses less digits than its factorization.

7386221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13170.

The product of its digits is 4032, while the sum is 29.

The square root of 7386221 is about 2717.7602911221. The cubic root of 7386221 is about 194.7484901200.

The spelling of 7386221 in words is "seven million, three hundred eighty-six thousand, two hundred twenty-one".