1317406 has 4 divisors (see below), whose sum is σ = 1976112. Its totient is φ = 658702.

The previous prime is 1317401. The next prime is 1317409. The reversal of 1317406 is 6047131.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329350 + ... + 329353.

It is an arithmetic number, because the mean of its divisors is an integer number (494028).

2^1317406 is an apocalyptic number.

1317406 is a deficient number, since it is larger than the sum of its proper divisors (658706).

1317406 is an equidigital number, since it uses as much as digits as its factorization.

1317406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658705.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1317406 is about 1147.7830805514. The cubic root of 1317406 is about 109.6242274215.

The spelling of 1317406 in words is "one million, three hundred seventeen thousand, four hundred six".