1663327 has 2 divisors, whose sum is σ = 1663328. Its totient is φ = 1663326.

The previous prime is 1663309. The next prime is 1663349. The reversal of 1663327 is 7233661.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1663327 is a prime.

1663327 is a lucky number.

It is equal to p₁₂₅₅₆₉ and since 1663327 and 125569 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 1663295 and 1663304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1663397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831663 + 831664.

It is an arithmetic number, because the mean of its divisors is an integer number (831664).

2^1663327 is an apocalyptic number.

1663327 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663327 is an equidigital number, since it uses as much as digits as its factorization.

1663327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 28.

The square root of 1663327 is about 1289.7003527952. The cubic root of 1663327 is about 118.4838649422.

Adding to 1663327 its reverse (7233661), we get a palindrome (8896988).

The spelling of 1663327 in words is "one million, six hundred sixty-three thousand, three hundred twenty-seven".