1662223 has 2 divisors, whose sum is σ = 1662224. Its totient is φ = 1662222.

The previous prime is 1662217. The next prime is 1662229. The reversal of 1662223 is 3222661.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1662217) and next prime (1662229).

It is a cyclic number.

It is not a de Polignac number, because 1662223 - 2⁵ = 1662191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1662194 and 1662203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1662229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831111 + 831112.

It is an arithmetic number, because the mean of its divisors is an integer number (831112).

2^1662223 is an apocalyptic number.

1662223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1662223 is an equidigital number, since it uses as much as digits as its factorization.

1662223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 22.

The square root of 1662223 is about 1289.2722753554. The cubic root of 1662223 is about 118.4576453759.

Adding to 1662223 its reverse (3222661), we get a palindrome (4884884).

The spelling of 1662223 in words is "one million, six hundred sixty-two thousand, two hundred twenty-three".