168490647 has 24 divisors (see below), whose sum is σ = 265428800. Its totient is φ = 102368448.

The previous prime is 168490639. The next prime is 168490661. The reversal of 168490647 is 746094861.

It is not a de Polignac number, because 168490647 - 2³ = 168490639 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168490697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129 + ... + 18357.

Almost surely, 2^168490647 is an apocalyptic number.

168490647 is a deficient number, since it is larger than the sum of its proper divisors (96938153).

168490647 is a wasteful number, since it uses less digits than its factorization.

168490647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18327 (or 18324 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 168490647 is about 12980.3947166486. The cubic root of 168490647 is about 552.3214790105.

The spelling of 168490647 in words is "one hundred sixty-eight million, four hundred ninety thousand, six hundred forty-seven".