68378020 has 12 divisors (see below), whose sum is σ = 143593884. Its totient is φ = 27351200.

The previous prime is 68377993. The next prime is 68378021. The reversal of 68378020 is 2087386.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54405376 + 13972644 = 7376^2 + 3738^2 .

It is not an unprimeable number, because it can be changed into a prime (68378021) 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, 1709431 + ... + 1709470.

It is an arithmetic number, because the mean of its divisors is an integer number (11966157).

Almost surely, 2^68378020 is an apocalyptic number.

It is an amenable number.

68378020 is an abundant number, since it is smaller than the sum of its proper divisors (75215864).

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

68378020 is a wasteful number, since it uses less digits than its factorization.

68378020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3418910 (or 3418908 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 68378020 is about 8269.1003138189. The cubic root of 68378020 is about 408.9204596611.

The spelling of 68378020 in words is "sixty-eight million, three hundred seventy-eight thousand, twenty".