1340565717 has 8 divisors (see below), whose sum is σ = 1787937696. Its totient is φ = 893452112.

The previous prime is 1340565683. The next prime is 1340565731. The reversal of 1340565717 is 7175650431.

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

It is a cyclic number.

It is not a de Polignac number, because 1340565717 - 2¹⁹ = 1340041429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340565797) 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, 52143 + ... + 73484.

It is an arithmetic number, because the mean of its divisors is an integer number (223492212).

Almost surely, 2^1340565717 is an apocalyptic number.

It is an amenable number.

1340565717 is a deficient number, since it is larger than the sum of its proper divisors (447371979).

1340565717 is a wasteful number, since it uses less digits than its factorization.

1340565717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129187.

The product of its (nonzero) digits is 88200, while the sum is 39.

The square root of 1340565717 is about 36613.7367254423. The cubic root of 1340565717 is about 1102.6288959289.

The spelling of 1340565717 in words is "one billion, three hundred forty million, five hundred sixty-five thousand, seven hundred seventeen".