1688960814 has 8 divisors (see below), whose sum is σ = 3377921640. Its totient is φ = 562986936.

The previous prime is 1688960813. The next prime is 1688960827. The reversal of 1688960814 is 4180698861.

It is a sphenic number, since it is the product of 3 distinct primes.

1688960814 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1688960813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140746729 + ... + 140746740.

It is an arithmetic number, because the mean of its divisors is an integer number (422240205).

Almost surely, 2^1688960814 is an apocalyptic number.

1688960814 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1688960814 is a wasteful number, since it uses less digits than its factorization.

1688960814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281493474.

The product of its (nonzero) digits is 663552, while the sum is 51.

The square root of 1688960814 is about 41096.9684283403. The cubic root of 1688960814 is about 1190.8942302903.

The spelling of 1688960814 in words is "one billion, six hundred eighty-eight million, nine hundred sixty thousand, eight hundred fourteen".