168475645 has 32 divisors (see below), whose sum is σ = 227203200. Its totient is φ = 119073024.

The previous prime is 168475633. The next prime is 168475691. The reversal of 168475645 is 546574861.

It is a cyclic number.

It is not a de Polignac number, because 168475645 - 2⁹ = 168475133 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 168475595 and 168475604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 261694 + ... + 262336.

It is an arithmetic number, because the mean of its divisors is an integer number (7100100).

Almost surely, 2^168475645 is an apocalyptic number.

It is an amenable number.

168475645 is a deficient number, since it is larger than the sum of its proper divisors (58727555).

168475645 is a wasteful number, since it uses less digits than its factorization.

168475645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829.

The product of its digits is 806400, while the sum is 46.

The square root of 168475645 is about 12979.8168322978. The cubic root of 168475645 is about 552.3050860674.

The spelling of 168475645 in words is "one hundred sixty-eight million, four hundred seventy-five thousand, six hundred forty-five".