68784078 has 16 divisors (see below), whose sum is σ = 150074496. Its totient is φ = 20843640.

The previous prime is 68784017. The next prime is 68784083. The reversal of 68784078 is 87048786.

It is a Curzon number.

It is a congruent 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, 521026 + ... + 521157.

It is an arithmetic number, because the mean of its divisors is an integer number (9379656).

Almost surely, 2^68784078 is an apocalyptic number.

68784078 is an abundant number, since it is smaller than the sum of its proper divisors (81290418).

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

68784078 is a wasteful number, since it uses less digits than its factorization.

68784078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042199.

The product of its (nonzero) digits is 602112, while the sum is 48.

The square root of 68784078 is about 8293.6167020185. The cubic root of 68784078 is about 409.7283109810.

The spelling of 68784078 in words is "sixty-eight million, seven hundred eighty-four thousand, seventy-eight".