168046681 has 8 divisors (see below), whose sum is σ = 183721824. Its totient is φ = 152437920.

The previous prime is 168046679. The next prime is 168046687. The reversal of 168046681 is 186640861.

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

It is a cyclic number.

It is not a de Polignac number, because 168046681 - 2¹ = 168046679 is a prime.

It is a super-2 number, since 2×168046681² = 56479373990231522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (168046687) 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, 11220 + ... + 21493.

It is an arithmetic number, because the mean of its divisors is an integer number (22965228).

Almost surely, 2^168046681 is an apocalyptic number.

168046681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

168046681 is a deficient number, since it is larger than the sum of its proper divisors (15675143).

168046681 is a wasteful number, since it uses less digits than its factorization.

168046681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33191.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 168046681 is about 12963.2820304119. The cubic root of 168046681 is about 551.8359374241.

The spelling of 168046681 in words is "one hundred sixty-eight million, forty-six thousand, six hundred eighty-one".