7346543221 has 12 divisors (see below), whose sum is σ = 7537752832. Its totient is φ = 7160076000.

The previous prime is 7346543209. The next prime is 7346543327. The reversal of 7346543221 is 1223456437.

It is not a de Polignac number, because 7346543221 - 2⁵ = 7346543189 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7346541221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2471266 + ... + 2474236.

Almost surely, 2^7346543221 is an apocalyptic number.

It is an amenable number.

7346543221 is a deficient number, since it is larger than the sum of its proper divisors (191209611).

7346543221 is a wasteful number, since it uses less digits than its factorization.

7346543221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4524 (or 4483 counting only the distinct ones).

The product of its digits is 120960, while the sum is 37.

The square root of 7346543221 is about 85711.9782819181. The cubic root of 7346543221 is about 1943.9914298375.

Adding to 7346543221 its reverse (1223456437), we get a palindrome (8569999658).

The spelling of 7346543221 in words is "seven billion, three hundred forty-six million, five hundred forty-three thousand, two hundred twenty-one".