168773977 has 12 divisors (see below), whose sum is σ = 187088256. Its totient is φ = 151933760.

The previous prime is 168773963. The next prime is 168774019. The reversal of 168773977 is 779377861.

It is not a de Polignac number, because 168773977 - 2²³ = 160385369 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168773947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6049 + ... + 19342.

It is an arithmetic number, because the mean of its divisors is an integer number (15590688).

Almost surely, 2^168773977 is an apocalyptic number.

168773977 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

168773977 is a deficient number, since it is larger than the sum of its proper divisors (18314279).

168773977 is a wasteful number, since it uses less digits than its factorization.

168773977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25448 (or 25431 counting only the distinct ones).

The product of its digits is 3111696, while the sum is 55.

The square root of 168773977 is about 12991.3038991473. The cubic root of 168773977 is about 552.6308960079.

The spelling of 168773977 in words is "one hundred sixty-eight million, seven hundred seventy-three thousand, nine hundred seventy-seven".