1688868055 has 48 divisors (see below), whose sum is σ = 2425365504. Its totient is φ = 1125196800.

The previous prime is 1688868053. The next prime is 1688868059. The reversal of 1688868055 is 5508688861.

It is a happy number.

It is not a de Polignac number, because 1688868055 - 2¹ = 1688868053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1688867987 and 1688868005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1688868053) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1466730 + ... + 1467880.

It is an arithmetic number, because the mean of its divisors is an integer number (50528448).

Almost surely, 2^1688868055 is an apocalyptic number.

1688868055 is a deficient number, since it is larger than the sum of its proper divisors (736497449).

1688868055 is a wasteful number, since it uses less digits than its factorization.

1688868055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336 (or 1329 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 55.

The square root of 1688868055 is about 41095.8398746150. The cubic root of 1688868055 is about 1190.8724282885.

The spelling of 1688868055 in words is "one billion, six hundred eighty-eight million, eight hundred sixty-eight thousand, fifty-five".