1688874 has 16 divisors (see below), whose sum is σ = 3684960. Its totient is φ = 511760.

The previous prime is 1688861. The next prime is 1688887. The reversal of 1688874 is 4788861.

It is an interprime number because it is at equal distance from previous prime (1688861) and next prime (1688887).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12729 + ... + 12860.

It is an arithmetic number, because the mean of its divisors is an integer number (230310).

2^1688874 is an apocalyptic number.

1688874 is an abundant number, since it is smaller than the sum of its proper divisors (1996086).

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

1688874 is a wasteful number, since it uses less digits than its factorization.

1688874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25605.

The product of its digits is 86016, while the sum is 42.

The square root of 1688874 is about 1299.5668509161. The cubic root of 1688874 is about 119.0873825620.

The spelling of 1688874 in words is "one million, six hundred eighty-eight thousand, eight hundred seventy-four".