168486257 has 8 divisors (see below), whose sum is σ = 170380800. Its totient is φ = 166602640.

The previous prime is 168486251. The next prime is 168486289. The reversal of 168486257 is 752684861.

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 168486257 - 2⁶ = 168486193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168486251) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 30494 + ... + 35592.

It is an arithmetic number, because the mean of its divisors is an integer number (21297600).

Almost surely, 2^168486257 is an apocalyptic number.

It is an amenable number.

168486257 is a deficient number, since it is larger than the sum of its proper divisors (1894543).

168486257 is a wasteful number, since it uses less digits than its factorization.

168486257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5463.

The product of its digits is 645120, while the sum is 47.

The square root of 168486257 is about 12980.2256143720. The cubic root of 168486257 is about 552.3166820828.

The spelling of 168486257 in words is "one hundred sixty-eight million, four hundred eighty-six thousand, two hundred fifty-seven".