78769168 has 10 divisors (see below), whose sum is σ = 152615294. Its totient is φ = 39384576.

The previous prime is 78769151. The next prime is 78769199. The reversal of 78769168 is 86196787.

It can be written as a sum of positive squares in only one way, i.e., 62220544 + 16548624 = 7888^2 + 4068^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2461521 + ... + 2461552.

Almost surely, 2^78769168 is an apocalyptic number.

It is an amenable number.

78769168 is a deficient number, since it is larger than the sum of its proper divisors (73846126).

78769168 is a wasteful number, since it uses less digits than its factorization.

78769168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4923081 (or 4923075 counting only the distinct ones).

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

The square root of 78769168 is about 8875.1996033892. The cubic root of 78769168 is about 428.6657180053.

The spelling of 78769168 in words is "seventy-eight million, seven hundred sixty-nine thousand, one hundred sixty-eight".