20602223 has 2 divisors, whose sum is σ = 20602224. Its totient is φ = 20602222.

The previous prime is 20602217. The next prime is 20602237. The reversal of 20602223 is 32220602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20602223 - 2⁴ = 20602207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20602243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10301111 + 10301112.

It is an arithmetic number, because the mean of its divisors is an integer number (10301112).

Almost surely, 2^20602223 is an apocalyptic number.

20602223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20602223 is an equidigital number, since it uses as much as digits as its factorization.

20602223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20602223 is about 4538.9671732675. The cubic root of 20602223 is about 274.1393389715.

Adding to 20602223 its reverse (32220602), we get a palindrome (52822825).

The spelling of 20602223 in words is "twenty million, six hundred two thousand, two hundred twenty-three".