168817427 has 4 divisors (see below), whose sum is σ = 169130016. Its totient is φ = 168504840.

The previous prime is 168817409. The next prime is 168817457. The reversal of 168817427 is 724718861.

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

It is a cyclic number.

It is not a de Polignac number, because 168817427 - 2¹⁴ = 168801043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168817457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155483 + ... + 156564.

It is an arithmetic number, because the mean of its divisors is an integer number (42282504).

Almost surely, 2^168817427 is an apocalyptic number.

168817427 is a deficient number, since it is larger than the sum of its proper divisors (312589).

168817427 is an equidigital number, since it uses as much as digits as its factorization.

168817427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312588.

The product of its digits is 150528, while the sum is 44.

The square root of 168817427 is about 12992.9760640124. The cubic root of 168817427 is about 552.6783159411.

The spelling of 168817427 in words is "one hundred sixty-eight million, eight hundred seventeen thousand, four hundred twenty-seven".