663674603 has 2 divisors, whose sum is σ = 663674604. Its totient is φ = 663674602.

The previous prime is 663674573. The next prime is 663674621. The reversal of 663674603 is 306476366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 663674603 - 2¹² = 663670507 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (663674633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331837301 + 331837302.

It is an arithmetic number, because the mean of its divisors is an integer number (331837302).

Almost surely, 2^663674603 is an apocalyptic number.

663674603 is a deficient number, since it is larger than the sum of its proper divisors (1).

663674603 is an equidigital number, since it uses as much as digits as its factorization.

663674603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 41.

The square root of 663674603 is about 25761.8827534014. The cubic root of 663674603 is about 872.2716004922.

The spelling of 663674603 in words is "six hundred sixty-three million, six hundred seventy-four thousand, six hundred three".