168989706 has 16 divisors (see below), whose sum is σ = 375532800. Its totient is φ = 56329884.

The previous prime is 168989683. The next prime is 168989719. The reversal of 168989706 is 607989861.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 3129439 = 168989706 / (1 + 6 + 8 + 9 + 8 + 9 + 7 + 0 + 6).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1564666 + ... + 1564773.

It is an arithmetic number, because the mean of its divisors is an integer number (23470800).

Almost surely, 2^168989706 is an apocalyptic number.

168989706 is an abundant number, since it is smaller than the sum of its proper divisors (206543094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168989706 is a wasteful number, since it uses less digits than its factorization.

168989706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3129450 (or 3129444 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 168989706 is about 12999.6040708939. The cubic root of 168989706 is about 552.8662556552.

The spelling of 168989706 in words is "one hundred sixty-eight million, nine hundred eighty-nine thousand, seven hundred six".