68778508 has 12 divisors (see below), whose sum is σ = 120863512. Its totient is φ = 34246080.

The previous prime is 68778473. The next prime is 68778509. The reversal of 68778508 is 80587786.

It is not an unprimeable number, because it can be changed into a prime (68778509) 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 in 3 ways as a sum of consecutive naturals, for example, 34710 + ... + 36637.

Almost surely, 2^68778508 is an apocalyptic number.

It is an amenable number.

68778508 is a deficient number, since it is larger than the sum of its proper divisors (52085004).

68778508 is a wasteful number, since it uses less digits than its factorization.

68778508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71592 (or 71590 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 49.

The square root of 68778508 is about 8293.2808947967. The cubic root of 68778508 is about 409.7172510169.

The spelling of 68778508 in words is "sixty-eight million, seven hundred seventy-eight thousand, five hundred eight".