1313606663 has 2 divisors, whose sum is σ = 1313606664. Its totient is φ = 1313606662.

The previous prime is 1313606641. The next prime is 1313606681. The reversal of 1313606663 is 3666063131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1313606663 - 2⁶ = 1313606599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313606683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656803331 + 656803332.

It is an arithmetic number, because the mean of its divisors is an integer number (656803332).

Almost surely, 2^1313606663 is an apocalyptic number.

1313606663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313606663 is an equidigital number, since it uses as much as digits as its factorization.

1313606663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 1313606663 is about 36243.7120477470. The cubic root of 1313606663 is about 1095.1874224476.

Adding to 1313606663 its reverse (3666063131), we get a palindrome (4979669794).

The spelling of 1313606663 in words is "one billion, three hundred thirteen million, six hundred six thousand, six hundred sixty-three".