168075641 has 4 divisors (see below), whose sum is σ = 168649572. Its totient is φ = 167501712.

The previous prime is 168075631. The next prime is 168075643. The reversal of 168075641 is 146570861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 121440400 + 46635241 = 11020^2 + 6829^2 .

It is a cyclic number.

It is not a de Polignac number, because 168075641 - 2¹⁰ = 168074617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168075595 and 168075604.

It is not an unprimeable number, because it can be changed into a prime (168075643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286526 + ... + 287111.

It is an arithmetic number, because the mean of its divisors is an integer number (42162393).

Almost surely, 2^168075641 is an apocalyptic number.

It is an amenable number.

168075641 is a deficient number, since it is larger than the sum of its proper divisors (573931).

168075641 is an equidigital number, since it uses as much as digits as its factorization.

168075641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573930.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 168075641 is about 12964.3989833698. The cubic root of 168075641 is about 551.8676354633.

The spelling of 168075641 in words is "one hundred sixty-eight million, seventy-five thousand, six hundred forty-one".