1317684 has 12 divisors (see below), whose sum is σ = 3074624. Its totient is φ = 439224.

The previous prime is 1317683. The next prime is 1317691. The reversal of 1317684 is 4867131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1317684² = 3472582247712, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54892 + ... + 54915.

2^1317684 is an apocalyptic number.

It is an amenable number.

1317684 is an abundant number, since it is smaller than the sum of its proper divisors (1756940).

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

1317684 is a wasteful number, since it uses less digits than its factorization.

1317684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109814 (or 109812 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 1317684 is about 1147.9041771855. The cubic root of 1317684 is about 109.6319378747.

The spelling of 1317684 in words is "one million, three hundred seventeen thousand, six hundred eighty-four".