1689070 has 16 divisors (see below), whose sum is σ = 3086928. Its totient is φ = 665280.

The previous prime is 1689067. The next prime is 1689071. The reversal of 1689070 is 709861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591 + ... + 1930.

It is an arithmetic number, because the mean of its divisors is an integer number (192933).

2^1689070 is an apocalyptic number.

1689070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1689070 is a deficient number, since it is larger than the sum of its proper divisors (1397858).

1689070 is a wasteful number, since it uses less digits than its factorization.

1689070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 1689070 is about 1299.6422584696. The cubic root of 1689070 is about 119.0919892258.

The spelling of 1689070 in words is "one million, six hundred eighty-nine thousand, seventy".