168776047 has 16 divisors (see below), whose sum is σ = 192595968. Its totient is φ = 146402080.

The previous prime is 168776033. The next prime is 168776053. The reversal of 168776047 is 740677861.

It is a de Polignac number, because none of the positive numbers 2^k-168776047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168775988 and 168776006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168776147) 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, 195138 + ... + 196000.

It is an arithmetic number, because the mean of its divisors is an integer number (12037248).

Almost surely, 2^168776047 is an apocalyptic number.

168776047 is a deficient number, since it is larger than the sum of its proper divisors (23819921).

168776047 is a wasteful number, since it uses less digits than its factorization.

168776047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 168776047 is about 12991.3835675805. The cubic root of 168776047 is about 552.6331553240.

The spelling of 168776047 in words is "one hundred sixty-eight million, seven hundred seventy-six thousand, forty-seven".