1689088806 has 12 divisors (see below), whose sum is σ = 3659692452. Its totient is φ = 563029596.

The previous prime is 1689088781. The next prime is 1689088811. The reversal of 1689088806 is 6088809861.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46919116 + ... + 46919151.

It is an arithmetic number, because the mean of its divisors is an integer number (304974371).

Almost surely, 2^1689088806 is an apocalyptic number.

1689088806 is an abundant number, since it is smaller than the sum of its proper divisors (1970603646).

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

1689088806 is a wasteful number, since it uses less digits than its factorization.

1689088806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93838275 (or 93838272 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 54.

The square root of 1689088806 is about 41098.5255939918. The cubic root of 1689088806 is about 1190.9243121179.

The spelling of 1689088806 in words is "one billion, six hundred eighty-nine million, eighty-eight thousand, eight hundred six".