1688104 has 16 divisors (see below), whose sum is σ = 3453120. Its totient is φ = 767280.

The previous prime is 1688101. The next prime is 1688123. The reversal of 1688104 is 4018861.

It is a super-2 number, since 2×1688104² = 5699390229632, which contains 22 as substring.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1688101) 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, 9504 + ... + 9679.

It is an arithmetic number, because the mean of its divisors is an integer number (215820).

2^1688104 is an apocalyptic number.

It is an amenable number.

1688104 is an abundant number, since it is smaller than the sum of its proper divisors (1765016).

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

1688104 is a wasteful number, since it uses less digits than its factorization.

1688104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19200 (or 19196 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 1688104 is about 1299.2705645861. The cubic root of 1688104 is about 119.0692815030.

The spelling of 1688104 in words is "one million, six hundred eighty-eight thousand, one hundred four".