1688314 has 4 divisors (see below), whose sum is σ = 2532474. Its totient is φ = 844156.

The previous prime is 1688311. The next prime is 1688317. The reversal of 1688314 is 4138861.

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

It is an interprime number because it is at equal distance from previous prime (1688311) and next prime (1688317).

It can be written as a sum of positive squares in only one way, i.e., 1404225 + 284089 = 1185^2 + 533^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1688311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422077 + ... + 422080.

2^1688314 is an apocalyptic number.

1688314 is a deficient number, since it is larger than the sum of its proper divisors (844160).

1688314 is an equidigital number, since it uses as much as digits as its factorization.

1688314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844159.

The product of its digits is 4608, while the sum is 31.

The square root of 1688314 is about 1299.3513766491. The cubic root of 1688314 is about 119.0742187013.

It can be divided in two parts, 1688 and 314, that added together give a palindrome (2002).

The spelling of 1688314 in words is "one million, six hundred eighty-eight thousand, three hundred fourteen".