1688124 has 12 divisors (see below), whose sum is σ = 3938984. Its totient is φ = 562704.

The previous prime is 1688123. The next prime is 1688143. The reversal of 1688124 is 4218861.

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

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 junction number, because it is equal to n+sod(n) for n = 1688091 and 1688100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1688123) 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, 70327 + ... + 70350.

2^1688124 is an apocalyptic number.

It is an amenable number.

1688124 is an abundant number, since it is smaller than the sum of its proper divisors (2250860).

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

1688124 is a wasteful number, since it uses less digits than its factorization.

1688124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140684 (or 140682 counting only the distinct ones).

The product of its digits is 3072, while the sum is 30.

The square root of 1688124 is about 1299.2782611896. The cubic root of 1688124 is about 119.0697517300.

The spelling of 1688124 in words is "one million, six hundred eighty-eight thousand, one hundred twenty-four".