68378740 has 12 divisors (see below), whose sum is σ = 143595396. Its totient is φ = 27351488.

The previous prime is 68378683. The next prime is 68378753. The reversal of 68378740 is 4787386.

It can be written as a sum of positive squares in 2 ways, for example, as 26440164 + 41938576 = 5142^2 + 6476^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1709449 + ... + 1709488.

It is an arithmetic number, because the mean of its divisors is an integer number (11966283).

Almost surely, 2^68378740 is an apocalyptic number.

It is an amenable number.

68378740 is an abundant number, since it is smaller than the sum of its proper divisors (75216656).

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

68378740 is a wasteful number, since it uses less digits than its factorization.

68378740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3418946 (or 3418944 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 68378740 is about 8269.1438492748. The cubic root of 68378740 is about 408.9218949259.

The spelling of 68378740 in words is "sixty-eight million, three hundred seventy-eight thousand, seven hundred forty".