1689330 has 16 divisors (see below), whose sum is σ = 4054464. Its totient is φ = 450480.

The previous prime is 1689319. The next prime is 1689343. The reversal of 1689330 is 339861.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 56311 = 1689330 / (1 + 6 + 8 + 9 + 3 + 3 + 0).

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, 28126 + ... + 28185.

It is an arithmetic number, because the mean of its divisors is an integer number (253404).

2^1689330 is an apocalyptic number.

1689330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1689330 is an abundant number, since it is smaller than the sum of its proper divisors (2365134).

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

1689330 is a wasteful number, since it uses less digits than its factorization.

1689330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56321.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1689330 is about 1299.7422821467. The cubic root of 1689330 is about 119.0980995565.

The spelling of 1689330 in words is "one million, six hundred eighty-nine thousand, three hundred thirty".