663320027 has 2 divisors, whose sum is σ = 663320028. Its totient is φ = 663320026.

The previous prime is 663320003. The next prime is 663320029. The reversal of 663320027 is 720023366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 663320027 - 2¹² = 663315931 is a prime.

Together with 663320029, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (663320029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331660013 + 331660014.

It is an arithmetic number, because the mean of its divisors is an integer number (331660014).

Almost surely, 2^663320027 is an apocalyptic number.

663320027 is a deficient number, since it is larger than the sum of its proper divisors (1).

663320027 is an equidigital number, since it uses as much as digits as its factorization.

663320027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 663320027 is about 25755.0000388274. Note that the first 4 decimals coincide. The cubic root of 663320027 is about 872.1162323494.

The spelling of 663320027 in words is "six hundred sixty-three million, three hundred twenty thousand, twenty-seven".