1317745 has 32 divisors (see below), whose sum is σ = 1975680. Its totient is φ = 829440.

The previous prime is 1317727. The next prime is 1317751. The reversal of 1317745 is 5477131.

It is not a de Polignac number, because 1317745 - 2⁵ = 1317713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13537 + ... + 13633.

It is an arithmetic number, because the mean of its divisors is an integer number (61740).

2^1317745 is an apocalyptic number.

It is an amenable number.

1317745 is a deficient number, since it is larger than the sum of its proper divisors (657935).

1317745 is a wasteful number, since it uses less digits than its factorization.

1317745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145.

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

The square root of 1317745 is about 1147.9307470401. The cubic root of 1317745 is about 109.6336295916.

The spelling of 1317745 in words is "one million, three hundred seventeen thousand, seven hundred forty-five".