168427861 has 8 divisors (see below), whose sum is σ = 196965824. Its totient is φ = 141009120.

The previous prime is 168427843. The next prime is 168427933. The reversal of 168427861 is 168724861.

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

It is not a de Polignac number, because 168427861 - 2²¹ = 166330709 is a prime.

It is a super-3 number, since 3×168427861³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168427801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279480 + ... + 280081.

It is an arithmetic number, because the mean of its divisors is an integer number (24620728).

Almost surely, 2^168427861 is an apocalyptic number.

It is an amenable number.

168427861 is a deficient number, since it is larger than the sum of its proper divisors (28537963).

168427861 is an equidigital number, since it uses as much as digits as its factorization.

168427861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559611.

The product of its digits is 129024, while the sum is 43.

The square root of 168427861 is about 12977.9759978203. The cubic root of 168427861 is about 552.2528651827.

The spelling of 168427861 in words is "one hundred sixty-eight million, four hundred twenty-seven thousand, eight hundred sixty-one".