653221323 has 6 divisors (see below), whose sum is σ = 943541924. Its totient is φ = 435480876.

The previous prime is 653221271. The next prime is 653221333. The reversal of 653221323 is 323122356.

653221323 is a `hidden beast` number, since 653 + 2 + 2 + 1 + 3 + 2 + 3 = 666.

It is not a de Polignac number, because 653221323 - 2⁸ = 653221067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653221333) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36290065 + ... + 36290082.

Almost surely, 2^653221323 is an apocalyptic number.

653221323 is a deficient number, since it is larger than the sum of its proper divisors (290320601).

653221323 is a wasteful number, since it uses less digits than its factorization.

653221323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72580153 (or 72580150 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 653221323 is about 25558.1948306214. The cubic root of 653221323 is about 867.6677406811.

Adding to 653221323 its reverse (323122356), we get a palindrome (976343679).

The spelling of 653221323 in words is "six hundred fifty-three million, two hundred twenty-one thousand, three hundred twenty-three".