168776980 has 24 divisors (see below), whose sum is σ = 364012488. Its totient is φ = 65685888.

The previous prime is 168776947. The next prime is 168776999. The reversal of 168776980 is 89677861.

It can be written as a sum of positive squares in 4 ways, for example, as 6061444 + 162715536 = 2462^2 + 12756^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113299 + ... + 114778.

It is an arithmetic number, because the mean of its divisors is an integer number (15167187).

Almost surely, 2^168776980 is an apocalyptic number.

168776980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168776980 is an abundant number, since it is smaller than the sum of its proper divisors (195235508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168776980 is a wasteful number, since it uses less digits than its factorization.

168776980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228123 (or 228121 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 168776980 is about 12991.4194759464. The cubic root of 168776980 is about 552.6341736474.

The spelling of 168776980 in words is "one hundred sixty-eight million, seven hundred seventy-six thousand, nine hundred eighty".