168688052 has 12 divisors (see below), whose sum is σ = 317912196. Its totient is φ = 77856000.

The previous prime is 168688043. The next prime is 168688057. The reversal of 168688052 is 250886861.

It can be written as a sum of positive squares in 2 ways, for example, as 115047076 + 53640976 = 10726^2 + 7324^2 .

It is a junction number, because it is equal to n+sod(n) for n = 168687994 and 168688012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168688057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1621949 + ... + 1622052.

It is an arithmetic number, because the mean of its divisors is an integer number (26492683).

Almost surely, 2^168688052 is an apocalyptic number.

It is an amenable number.

168688052 is a deficient number, since it is larger than the sum of its proper divisors (149224144).

168688052 is a wasteful number, since it uses less digits than its factorization.

168688052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3244018 (or 3244016 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 44.

The square root of 168688052 is about 12987.9964582687. The cubic root of 168688052 is about 552.5370962582.

The spelling of 168688052 in words is "one hundred sixty-eight million, six hundred eighty-eight thousand, fifty-two".