1689266860 has 12 divisors (see below), whose sum is σ = 3547460448. Its totient is φ = 675706736.

The previous prime is 1689266851. The next prime is 1689266893. The reversal of 1689266860 is 686629861.

It is a junction number, because it is equal to n+sod(n) for n = 1689266798 and 1689266807.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 42231652 + ... + 42231691.

It is an arithmetic number, because the mean of its divisors is an integer number (295621704).

Almost surely, 2^1689266860 is an apocalyptic number.

1689266860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1689266860 is an abundant number, since it is smaller than the sum of its proper divisors (1858193588).

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

1689266860 is a wasteful number, since it uses less digits than its factorization.

1689266860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84463352 (or 84463350 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 52.

The square root of 1689266860 is about 41100.6917216730. The cubic root of 1689266860 is about 1190.9661574383.

The spelling of 1689266860 in words is "one billion, six hundred eighty-nine million, two hundred sixty-six thousand, eight hundred sixty".