68739778 has 8 divisors (see below), whose sum is σ = 107592768. Its totient is φ = 32875524.

The previous prime is 68739743. The next prime is 68739787. The reversal of 68739778 is 87793786.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747126 + ... + 747217.

It is an arithmetic number, because the mean of its divisors is an integer number (13449096).

Almost surely, 2^68739778 is an apocalyptic number.

68739778 is a deficient number, since it is larger than the sum of its proper divisors (38852990).

68739778 is a wasteful number, since it uses less digits than its factorization.

68739778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494368.

The product of its digits is 3556224, while the sum is 55.

The square root of 68739778 is about 8290.9455431814. The cubic root of 68739778 is about 409.6403310163.

The spelling of 68739778 in words is "sixty-eight million, seven hundred thirty-nine thousand, seven hundred seventy-eight".