168487969 has 8 divisors (see below), whose sum is σ = 192122280. Its totient is φ = 146378496.

The previous prime is 168487951. The next prime is 168487981. The reversal of 168487969 is 969784861.

It can be written as a sum of positive squares in 4 ways, for example, as 7569 + 168480400 = 87^2 + 12980^2 .

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 168487969 - 2¹⁷ = 168356897 is a prime.

It is a super-2 number, since 2×168487969² = 56776391395489922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168487919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380974 + ... + 381415.

It is an arithmetic number, because the mean of its divisors is an integer number (24015285).

Almost surely, 2^168487969 is an apocalyptic number.

It is an amenable number.

168487969 is a deficient number, since it is larger than the sum of its proper divisors (23634311).

168487969 is a wasteful number, since it uses less digits than its factorization.

168487969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762419.

The product of its digits is 5225472, while the sum is 58.

The square root of 168487969 is about 12980.2915606700. The cubic root of 168487969 is about 552.3185527852.

The spelling of 168487969 in words is "one hundred sixty-eight million, four hundred eighty-seven thousand, nine hundred sixty-nine".