4623366221 has 2 divisors, whose sum is σ = 4623366222. Its totient is φ = 4623366220.

The previous prime is 4623366211. The next prime is 4623366247. The reversal of 4623366221 is 1226633264.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4262784100 + 360582121 = 65290^2 + 18989^2 .

It is a cyclic number.

It is not a de Polignac number, because 4623366221 - 2¹⁸ = 4623104077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4623366211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2311683110 + 2311683111.

It is an arithmetic number, because the mean of its divisors is an integer number (2311683111).

Almost surely, 2^4623366221 is an apocalyptic number.

It is an amenable number.

4623366221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4623366221 is an equidigital number, since it uses as much as digits as its factorization.

4623366221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 35.

The square root of 4623366221 is about 67995.3397006001. The cubic root of 4623366221 is about 1665.9147184264.

Adding to 4623366221 its reverse (1226633264), we get a palindrome (5849999485).

The spelling of 4623366221 in words is "four billion, six hundred twenty-three million, three hundred sixty-six thousand, two hundred twenty-one".