168989626 has 8 divisors (see below), whose sum is σ = 272983284. Its totient is φ = 77995200.

The previous prime is 168989609. The next prime is 168989651. The reversal of 168989626 is 626989861.

It can be written as a sum of positive squares in 2 ways, for example, as 168974001 + 15625 = 12999^2 + 125^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3249775 + ... + 3249826.

Almost surely, 2^168989626 is an apocalyptic number.

168989626 is a deficient number, since it is larger than the sum of its proper divisors (103993658).

168989626 is a wasteful number, since it uses less digits than its factorization.

168989626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6499616.

The product of its digits is 2239488, while the sum is 55.

The square root of 168989626 is about 12999.6009938767. The cubic root of 168989626 is about 552.8661684126.

The spelling of 168989626 in words is "one hundred sixty-eight million, nine hundred eighty-nine thousand, six hundred twenty-six".