68986768 has 10 divisors (see below), whose sum is σ = 133661894. Its totient is φ = 34493376.

The previous prime is 68986721. The next prime is 68986769. The reversal of 68986768 is 86768986.

It can be written as a sum of positive squares in only one way, i.e., 56370064 + 12616704 = 7508^2 + 3552^2 .

It is not an unprimeable number, because it can be changed into a prime (68986769) by changing a digit.

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, 2155821 + ... + 2155852.

Almost surely, 2^68986768 is an apocalyptic number.

It is an amenable number.

68986768 is a deficient number, since it is larger than the sum of its proper divisors (64675126).

68986768 is a wasteful number, since it uses less digits than its factorization.

68986768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311681 (or 4311675 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 58.

The square root of 68986768 is about 8305.8273519259. The cubic root of 68986768 is about 410.1303729751.

The spelling of 68986768 in words is "sixty-eight million, nine hundred eighty-six thousand, seven hundred sixty-eight".