977824168 has 8 divisors (see below), whose sum is σ = 1833420330. Its totient is φ = 488912080.

The previous prime is 977824109. The next prime is 977824187. The reversal of 977824168 is 861428779.

It can be written as a sum of positive squares in only one way, i.e., 904926724 + 72897444 = 30082^2 + 8538^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×977824168² = 1912280207049784448, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 61114003 + ... + 61114018.

Almost surely, 2^977824168 is an apocalyptic number.

It is an amenable number.

977824168 is a deficient number, since it is larger than the sum of its proper divisors (855596162).

977824168 is a wasteful number, since it uses less digits than its factorization.

977824168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122228027 (or 122228023 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 52.

The square root of 977824168 is about 31270.1801721704. The cubic root of 977824168 is about 992.5527318771.

The spelling of 977824168 in words is "nine hundred seventy-seven million, eight hundred twenty-four thousand, one hundred sixty-eight".