663349523 has 2 divisors, whose sum is σ = 663349524. Its totient is φ = 663349522.

The previous prime is 663349507. The next prime is 663349549. The reversal of 663349523 is 325943366.

663349523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 663349523 - 2⁴ = 663349507 is a prime.

It is not a weakly prime, because it can be changed into another prime (663349553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331674761 + 331674762.

It is an arithmetic number, because the mean of its divisors is an integer number (331674762).

Almost surely, 2^663349523 is an apocalyptic number.

663349523 is a deficient number, since it is larger than the sum of its proper divisors (1).

663349523 is an equidigital number, since it uses as much as digits as its factorization.

663349523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 41.

The square root of 663349523 is about 25755.5726591353. The cubic root of 663349523 is about 872.1291590204.

It can be divided in two parts, 66334 and 9523, that added together give a palindrome (75857).

The spelling of 663349523 in words is "six hundred sixty-three million, three hundred forty-nine thousand, five hundred twenty-three".