1315666717 has 8 divisors (see below), whose sum is σ = 1321697376. Its totient is φ = 1309646352.

The previous prime is 1315666687. The next prime is 1315666747. The reversal of 1315666717 is 7176665131.

It is an interprime number because it is at equal distance from previous prime (1315666687) and next prime (1315666747).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1315666717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315666747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368103 + ... + 371659.

It is an arithmetic number, because the mean of its divisors is an integer number (165212172).

Almost surely, 2^1315666717 is an apocalyptic number.

It is an amenable number.

1315666717 is a deficient number, since it is larger than the sum of its proper divisors (6030659).

1315666717 is a wasteful number, since it uses less digits than its factorization.

1315666717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5147.

The product of its digits is 158760, while the sum is 43.

The square root of 1315666717 is about 36272.1203819132. The cubic root of 1315666717 is about 1095.7596299751.

The spelling of 1315666717 in words is "one billion, three hundred fifteen million, six hundred sixty-six thousand, seven hundred seventeen".