168066815 has 12 divisors (see below), whose sum is σ = 234607896. Its totient is φ = 115245648.

The previous prime is 168066791. The next prime is 168066827. The reversal of 168066815 is 518660861.

It is a happy number.

It is not a de Polignac number, because 168066815 - 2²⁰ = 167018239 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 342749 + ... + 343238.

It is an arithmetic number, because the mean of its divisors is an integer number (19550658).

Almost surely, 2^168066815 is an apocalyptic number.

168066815 is a deficient number, since it is larger than the sum of its proper divisors (66541081).

168066815 is an equidigital number, since it uses as much as digits as its factorization.

168066815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686006 (or 685999 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 168066815 is about 12964.0585851808. The cubic root of 168066815 is about 551.8579753900.

The spelling of 168066815 in words is "one hundred sixty-eight million, sixty-six thousand, eight hundred fifteen".