1216713607 has 2 divisors, whose sum is σ = 1216713608. Its totient is φ = 1216713606.

The previous prime is 1216713599. The next prime is 1216713611. The reversal of 1216713607 is 7063176121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1216713607 - 2³ = 1216713599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1216713907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608356803 + 608356804.

It is an arithmetic number, because the mean of its divisors is an integer number (608356804).

Almost surely, 2^1216713607 is an apocalyptic number.

1216713607 is a deficient number, since it is larger than the sum of its proper divisors (1).

1216713607 is an equidigital number, since it uses as much as digits as its factorization.

1216713607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 1216713607 is about 34881.4220897027. The cubic root of 1216713607 is about 1067.5694114325.

Adding to 1216713607 its reverse (7063176121), we get a palindrome (8279889728).

The spelling of 1216713607 in words is "one billion, two hundred sixteen million, seven hundred thirteen thousand, six hundred seven".