1688120 has 32 divisors (see below), whose sum is σ = 4341600. Its totient is φ = 578688.

The previous prime is 1688101. The next prime is 1688123. The reversal of 1688120 is 218861.

It is a self number, because there is not a number n which added to its sum of digits gives 1688120.

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 7 ways as a sum of consecutive naturals, for example, 2735 + ... + 3294.

It is an arithmetic number, because the mean of its divisors is an integer number (135675).

2^1688120 is an apocalyptic number.

1688120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1688120 is an abundant number, since it is smaller than the sum of its proper divisors (2653480).

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

1688120 is a wasteful number, since it uses less digits than its factorization.

1688120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6047 (or 6043 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 1688120 is about 1299.2767218726. The cubic root of 1688120 is about 119.0696576849.

The spelling of 1688120 in words is "one million, six hundred eighty-eight thousand, one hundred twenty".