68254778 has 16 divisors (see below), whose sum is σ = 104616360. Its totient is φ = 33386496.

The previous prime is 68254759. The next prime is 68254793. The reversal of 68254778 is 87745286.

It can be written as a sum of positive squares in 4 ways, for example, as 57410929 + 10843849 = 7577^2 + 3293^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47738 + ... + 49146.

Almost surely, 2^68254778 is an apocalyptic number.

68254778 is a deficient number, since it is larger than the sum of its proper divisors (36361582).

68254778 is a wasteful number, since it uses less digits than its factorization.

68254778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921.

The product of its digits is 752640, while the sum is 47.

The square root of 68254778 is about 8261.6449935833. The cubic root of 68254778 is about 408.6746375726.

The spelling of 68254778 in words is "sixty-eight million, two hundred fifty-four thousand, seven hundred seventy-eight".