168406845 has 32 divisors (see below), whose sum is σ = 289588608. Its totient is φ = 83263488.

The previous prime is 168406837. The next prime is 168406871. The reversal of 168406845 is 548604861.

It is not a de Polignac number, because 168406845 - 2³ = 168406837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168406797 and 168406806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12157 + ... + 22013.

It is an arithmetic number, because the mean of its divisors is an integer number (9049644).

Almost surely, 2^168406845 is an apocalyptic number.

168406845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168406845 is a deficient number, since it is larger than the sum of its proper divisors (121181763).

168406845 is a wasteful number, since it uses less digits than its factorization.

168406845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9949.

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 168406845 is about 12977.1662931474. The cubic root of 168406845 is about 552.2298946581.

The spelling of 168406845 in words is "one hundred sixty-eight million, four hundred six thousand, eight hundred forty-five".