3672533221 has 16 divisors (see below), whose sum is σ = 4306474368. Its totient is φ = 3066163200.

The previous prime is 3672533219. The next prime is 3672533231. The reversal of 3672533221 is 1223352763.

It is a cyclic number.

It is not a de Polignac number, because 3672533221 - 2¹ = 3672533219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3672533201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173986 + ... + 193948.

It is an arithmetic number, because the mean of its divisors is an integer number (269154648).

Almost surely, 2^3672533221 is an apocalyptic number.

It is an amenable number.

3672533221 is a deficient number, since it is larger than the sum of its proper divisors (633941147).

3672533221 is a wasteful number, since it uses less digits than its factorization.

3672533221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20652.

The product of its digits is 45360, while the sum is 34.

The square root of 3672533221 is about 60601.4291993184. The cubic root of 3672533221 is about 1542.8436273242.

Adding to 3672533221 its reverse (1223352763), we get a palindrome (4895885984).

The spelling of 3672533221 in words is "three billion, six hundred seventy-two million, five hundred thirty-three thousand, two hundred twenty-one".