168800645 has 8 divisors (see below), whose sum is σ = 218142456. Its totient is φ = 124652736.

The previous prime is 168800629. The next prime is 168800683. The reversal of 168800645 is 546008861.

It can be written as a sum of positive squares in 4 ways, for example, as 11498881 + 157301764 = 3391^2 + 12542^2 .

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

It is not a de Polignac number, because 168800645 - 2⁴ = 168800629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168800599 and 168800608.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1298402 + ... + 1298531.

It is an arithmetic number, because the mean of its divisors is an integer number (27267807).

Almost surely, 2^168800645 is an apocalyptic number.

It is an amenable number.

168800645 is a deficient number, since it is larger than the sum of its proper divisors (49341811).

168800645 is a wasteful number, since it uses less digits than its factorization.

168800645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596951.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 168800645 is about 12992.3302374901. The cubic root of 168800645 is about 552.6600015703.

The spelling of 168800645 in words is "one hundred sixty-eight million, eight hundred thousand, six hundred forty-five".