68929778 has 8 divisors (see below), whose sum is σ = 103539072. Its totient is φ = 34416756.

The previous prime is 68929717. The next prime is 68929793. The reversal of 68929778 is 87792986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22250 + ... + 25157.

It is an arithmetic number, because the mean of its divisors is an integer number (12942384).

Almost surely, 2^68929778 is an apocalyptic number.

68929778 is a deficient number, since it is larger than the sum of its proper divisors (34609294).

68929778 is a wasteful number, since it uses less digits than its factorization.

68929778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48136.

The product of its digits is 3048192, while the sum is 56.

The square root of 68929778 is about 8302.3959192513. The cubic root of 68929778 is about 410.0174055668.

The spelling of 68929778 in words is "sixty-eight million, nine hundred twenty-nine thousand, seven hundred seventy-eight".