168247641 has 16 divisors (see below), whose sum is σ = 241899840. Its totient is φ = 103668480.

The previous prime is 168247609. The next prime is 168247661. The reversal of 168247641 is 146742861.

It is not a de Polignac number, because 168247641 - 2⁵ = 168247609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168247641.

It is not an unprimeable number, because it can be changed into a prime (168247601) 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 15 ways as a sum of consecutive naturals, for example, 33660 + ... + 38333.

It is an arithmetic number, because the mean of its divisors is an integer number (15118740).

Almost surely, 2^168247641 is an apocalyptic number.

It is an amenable number.

168247641 is a deficient number, since it is larger than the sum of its proper divisors (73652199).

168247641 is a wasteful number, since it uses less digits than its factorization.

168247641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72056.

The product of its digits is 64512, while the sum is 39.

The square root of 168247641 is about 12971.0308379866. The cubic root of 168247641 is about 552.0558223057.

The spelling of 168247641 in words is "one hundred sixty-eight million, two hundred forty-seven thousand, six hundred forty-one".