1345717 has 4 divisors (see below), whose sum is σ = 1357740. Its totient is φ = 1333696.

The previous prime is 1345711. The next prime is 1345733. The reversal of 1345717 is 7175431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7175431 = 353 ⋅20327.

It can be written as a sum of positive squares in 2 ways, for example, as 181476 + 1164241 = 426^2 + 1079^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345717 - 2¹¹ = 1343669 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 (1345711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5842 + ... + 6067.

It is an arithmetic number, because the mean of its divisors is an integer number (339435).

2^1345717 is an apocalyptic number.

It is an amenable number.

1345717 is a deficient number, since it is larger than the sum of its proper divisors (12023).

1345717 is a wasteful number, since it uses less digits than its factorization.

1345717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12022.

The product of its digits is 2940, while the sum is 28.

The square root of 1345717 is about 1160.0504299383. The cubic root of 1345717 is about 110.4039418270.

The spelling of 1345717 in words is "one million, three hundred forty-five thousand, seven hundred seventeen".