168456729 has 8 divisors (see below), whose sum is σ = 256696000. Its totient is φ = 96260976.

The previous prime is 168456727. The next prime is 168456749. The reversal of 168456729 is 927654861.

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

It is not a de Polignac number, because 168456729 - 2¹ = 168456727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168456727) 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 7 ways as a sum of consecutive naturals, for example, 4010854 + ... + 4010895.

It is an arithmetic number, because the mean of its divisors is an integer number (32087000).

Almost surely, 2^168456729 is an apocalyptic number.

It is an amenable number.

168456729 is a deficient number, since it is larger than the sum of its proper divisors (88239271).

168456729 is an equidigital number, since it uses as much as digits as its factorization.

168456729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8021759.

The product of its digits is 725760, while the sum is 48.

The square root of 168456729 is about 12979.0881420846. The cubic root of 168456729 is about 552.2844148421.

The spelling of 168456729 in words is "one hundred sixty-eight million, four hundred fifty-six thousand, seven hundred twenty-nine".