1317906 has 24 divisors (see below), whose sum is σ = 2877264. Its totient is φ = 435960.

The previous prime is 1317887. The next prime is 1317917. The reversal of 1317906 is 6097131.

It is a self number, because there is not a number n which added to its sum of digits gives 1317906.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3625 + ... + 3971.

It is an arithmetic number, because the mean of its divisors is an integer number (119886).

2^1317906 is an apocalyptic number.

1317906 is an abundant number, since it is smaller than the sum of its proper divisors (1559358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1317906 is a wasteful number, since it uses less digits than its factorization.

1317906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 563 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 1317906 is about 1148.0008710798. Note that the first 3 decimals coincide. The cubic root of 1317906 is about 109.6380943643.

The spelling of 1317906 in words is "one million, three hundred seventeen thousand, nine hundred six".