1068728678 has 4 divisors (see below), whose sum is σ = 1603093020. Its totient is φ = 534364338.

The previous prime is 1068728657. The next prime is 1068728693. The reversal of 1068728678 is 8768278601.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1068728678² = 2284361974359255368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267182168 + ... + 267182171.

It is an arithmetic number, because the mean of its divisors is an integer number (400773255).

Almost surely, 2^1068728678 is an apocalyptic number.

1068728678 is a deficient number, since it is larger than the sum of its proper divisors (534364342).

1068728678 is an equidigital number, since it uses as much as digits as its factorization.

1068728678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534364341.

The product of its (nonzero) digits is 1806336, while the sum is 53.

The square root of 1068728678 is about 32691.4159681100. The cubic root of 1068728678 is about 1022.4038771993.

The spelling of 1068728678 in words is "one billion, sixty-eight million, seven hundred twenty-eight thousand, six hundred seventy-eight".