68454378 has 24 divisors (see below), whose sum is σ = 156124800. Its totient is φ = 21617064.

The previous prime is 68454377. The next prime is 68454389. The reversal of 68454378 is 87345486.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68454377) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99738 + ... + 100421.

It is an arithmetic number, because the mean of its divisors is an integer number (6505200).

Almost surely, 2^68454378 is an apocalyptic number.

68454378 is an abundant number, since it is smaller than the sum of its proper divisors (87670422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68454378 is a wasteful number, since it uses less digits than its factorization.

68454378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200186 (or 200183 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 68454378 is about 8273.7160937513. The cubic root of 68454378 is about 409.0726173909.

The spelling of 68454378 in words is "sixty-eight million, four hundred fifty-four thousand, three hundred seventy-eight".