861646168 has 16 divisors (see below), whose sum is σ = 1616258160. Its totient is φ = 430644000.

The previous prime is 861646109. The next prime is 861646183.

861646168 is nontrivially palindromic in base 10.

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 3 ways as a sum of consecutive naturals, for example, 703 + ... + 41518.

It is an arithmetic number, because the mean of its divisors is an integer number (101016135).

Almost surely, 2^861646168 is an apocalyptic number.

It is an amenable number.

861646168 is a deficient number, since it is larger than the sum of its proper divisors (754611992).

861646168 is a wasteful number, since it uses less digits than its factorization.

861646168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44778 (or 44774 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 861646168 is about 29353.8101104439. The cubic root of 861646168 is about 951.5749196799.

The spelling of 861646168 in words is "eight hundred sixty-one million, six hundred forty-six thousand, one hundred sixty-eight".