168672447 has 12 divisors (see below), whose sum is σ = 248235624. Its totient is φ = 110326320.

The previous prime is 168672437. The next prime is 168672451. The reversal of 168672447 is 744276861.

It is not a de Polignac number, because 168672447 - 2¹⁰ = 168671423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168672437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176329 + ... + 177282.

It is an arithmetic number, because the mean of its divisors is an integer number (20686302).

Almost surely, 2^168672447 is an apocalyptic number.

168672447 is a deficient number, since it is larger than the sum of its proper divisors (79563177).

168672447 is a wasteful number, since it uses less digits than its factorization.

168672447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353670 (or 353667 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 168672447 is about 12987.3956973675. The cubic root of 168672447 is about 552.5200576927.

The spelling of 168672447 in words is "one hundred sixty-eight million, six hundred seventy-two thousand, four hundred forty-seven".