1688230 has 16 divisors (see below), whose sum is σ = 3078720. Its totient is φ = 666432.

The previous prime is 1688213. The next prime is 1688231. The reversal of 1688230 is 328861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1688231) 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, 279 + ... + 1858.

It is an arithmetic number, because the mean of its divisors is an integer number (192420).

2^1688230 is an apocalyptic number.

1688230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1688230 is a deficient number, since it is larger than the sum of its proper divisors (1390490).

1688230 is a wasteful number, since it uses less digits than its factorization.

1688230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1688230 is about 1299.3190524271. The cubic root of 1688230 is about 119.0722438711.

The spelling of 1688230 in words is "one million, six hundred eighty-eight thousand, two hundred thirty".