168479985 has 32 divisors (see below), whose sum is σ = 274796928. Its totient is φ = 88128000.

The previous prime is 168479933. The next prime is 168479989. The reversal of 168479985 is 589974861.

It is not a de Polignac number, because 168479985 - 2¹² = 168475889 is a prime.

Its product of digits (4354560) is a multiple of the sum of its prime divisors (945).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (168479989) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 274539 + ... + 275151.

It is an arithmetic number, because the mean of its divisors is an integer number (8587404).

Almost surely, 2^168479985 is an apocalyptic number.

168479985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168479985 is a deficient number, since it is larger than the sum of its proper divisors (106316943).

168479985 is a wasteful number, since it uses less digits than its factorization.

168479985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945.

The product of its digits is 4354560, while the sum is 57.

The square root of 168479985 is about 12979.9840138576. The cubic root of 168479985 is about 552.3098285600.

The spelling of 168479985 in words is "one hundred sixty-eight million, four hundred seventy-nine thousand, nine hundred eighty-five".