1317897 has 32 divisors (see below), whose sum is σ = 2355200. Its totient is φ = 711504.

The previous prime is 1317887. The next prime is 1317917. The reversal of 1317897 is 7987131.

It is not a de Polignac number, because 1317897 - 2⁴ = 1317881 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3408 + ... + 3774.

It is an arithmetic number, because the mean of its divisors is an integer number (73600).

2^1317897 is an apocalyptic number.

It is an amenable number.

1317897 is a deficient number, since it is larger than the sum of its proper divisors (1037303).

1317897 is a wasteful number, since it uses less digits than its factorization.

1317897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 396 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 1317897 is about 1147.9969512155. The cubic root of 1317897 is about 109.6378447903.

The spelling of 1317897 in words is "one million, three hundred seventeen thousand, eight hundred ninety-seven".