68916784 has 10 divisors (see below), whose sum is σ = 133526300. Its totient is φ = 34458384.

The previous prime is 68916761. The next prime is 68916787. The reversal of 68916784 is 48761986.

It is not an unprimeable number, because it can be changed into a prime (68916787) 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, 2153634 + ... + 2153665.

It is an arithmetic number, because the mean of its divisors is an integer number (13352630).

Almost surely, 2^68916784 is an apocalyptic number.

It is an amenable number.

68916784 is a deficient number, since it is larger than the sum of its proper divisors (64609516).

68916784 is a wasteful number, since it uses less digits than its factorization.

68916784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4307307 (or 4307301 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 68916784 is about 8301.6133371773. The cubic root of 68916784 is about 409.9916397264.

The spelling of 68916784 in words is "sixty-eight million, nine hundred sixteen thousand, seven hundred eighty-four".