168649984 has 36 divisors (see below), whose sum is σ = 351290016. Its totient is φ = 80655872.

The previous prime is 168649973. The next prime is 168649997. The reversal of 168649984 is 489946861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8434 + ... + 20209.

It is an arithmetic number, because the mean of its divisors is an integer number (9758056).

Almost surely, 2^168649984 is an apocalyptic number.

It is an amenable number.

168649984 is an abundant number, since it is smaller than the sum of its proper divisors (182640032).

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

168649984 is an equidigital number, since it uses as much as digits as its factorization.

168649984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28682 (or 28668 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 55.

The square root of 168649984 is about 12986.5308685576. The cubic root of 168649984 is about 552.4955292664.

The spelling of 168649984 in words is "one hundred sixty-eight million, six hundred forty-nine thousand, nine hundred eighty-four".