168842605 has 16 divisors (see below), whose sum is σ = 204926400. Its totient is φ = 133539840.

The previous prime is 168842603. The next prime is 168842621. The reversal of 168842605 is 506248861.

It is not a de Polignac number, because 168842605 - 2¹ = 168842603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168842603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263085 + ... + 263725.

It is an arithmetic number, because the mean of its divisors is an integer number (12807900).

Almost surely, 2^168842605 is an apocalyptic number.

It is an amenable number.

168842605 is a deficient number, since it is larger than the sum of its proper divisors (36083795).

168842605 is a wasteful number, since it uses less digits than its factorization.

168842605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 168842605 is about 12993.9449360077. The cubic root of 168842605 is about 552.7057906775.

The spelling of 168842605 in words is "one hundred sixty-eight million, eight hundred forty-two thousand, six hundred five".