68134778 has 8 divisors (see below), whose sum is σ = 102320820. Its totient is φ = 34027840.

The previous prime is 68134777. The next prime is 68134811. The reversal of 68134778 is 87743186.

It can be written as a sum of positive squares in 2 ways, for example, as 58874929 + 9259849 = 7673^2 + 3043^2 .

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

It is not an unprimeable number, because it can be changed into a prime (68134771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17573 + ... + 21096.

Almost surely, 2^68134778 is an apocalyptic number.

68134778 is a deficient number, since it is larger than the sum of its proper divisors (34186042).

68134778 is a wasteful number, since it uses less digits than its factorization.

68134778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39552.

The product of its digits is 225792, while the sum is 44.

The square root of 68134778 is about 8254.3793225172. The cubic root of 68134778 is about 408.4349975748.

The spelling of 68134778 in words is "sixty-eight million, one hundred thirty-four thousand, seven hundred seventy-eight".