68248778 has 16 divisors (see below), whose sum is σ = 116733960. Its totient is φ = 29646336.

The previous prime is 68248777. The next prime is 68248799. The reversal of 68248778 is 87784286.

It can be written as a sum of positive squares in 4 ways, for example, as 48205249 + 20043529 = 6943^2 + 4477^2 .

It is not an unprimeable number, because it can be changed into a prime (68248771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76763 + ... + 77646.

Almost surely, 2^68248778 is an apocalyptic number.

68248778 is a deficient number, since it is larger than the sum of its proper divisors (48485182).

68248778 is a wasteful number, since it uses less digits than its factorization.

68248778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154441.

The product of its digits is 1204224, while the sum is 50.

The square root of 68248778 is about 8261.2818617936. The cubic root of 68248778 is about 408.6626622465.

The spelling of 68248778 in words is "sixty-eight million, two hundred forty-eight thousand, seven hundred seventy-eight".