68378146 has 16 divisors (see below), whose sum is σ = 105572664. Its totient is φ = 33191424.

The previous prime is 68378129. The next prime is 68378147. The reversal of 68378146 is 64187386.

It can be written as a sum of positive squares in 4 ways, for example, as 67881121 + 497025 = 8239^2 + 705^2 .

It is not an unprimeable number, because it can be changed into a prime (68378147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49116 + ... + 50488.

Almost surely, 2^68378146 is an apocalyptic number.

68378146 is a deficient number, since it is larger than the sum of its proper divisors (37194518).

68378146 is a wasteful number, since it uses less digits than its factorization.

68378146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085.

The product of its digits is 193536, while the sum is 43.

The square root of 68378146 is about 8269.1079325402. The cubic root of 68378146 is about 408.9207108331.

The spelling of 68378146 in words is "sixty-eight million, three hundred seventy-eight thousand, one hundred forty-six".