1317705 has 16 divisors (see below), whose sum is σ = 2130624. Its totient is φ = 695360.

The previous prime is 1317703. The next prime is 1317713. The reversal of 1317705 is 5077131.

It is not a de Polignac number, because 1317705 - 2¹ = 1317703 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1195 + ... + 2015.

It is an arithmetic number, because the mean of its divisors is an integer number (133164).

2^1317705 is an apocalyptic number.

1317705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1317705 is a deficient number, since it is larger than the sum of its proper divisors (812919).

1317705 is a wasteful number, since it uses less digits than its factorization.

1317705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936.

The product of its (nonzero) digits is 735, while the sum is 24.

The square root of 1317705 is about 1147.9133242541. The cubic root of 1317705 is about 109.6325202749.

The spelling of 1317705 in words is "one million, three hundred seventeen thousand, seven hundred five".