78056678 has 16 divisors (see below), whose sum is σ = 134048544. Its totient is φ = 33393600.

The previous prime is 78056669. The next prime is 78056681. The reversal of 78056678 is 87665087.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3776 + ... + 13052.

It is an arithmetic number, because the mean of its divisors is an integer number (8378034).

Almost surely, 2^78056678 is an apocalyptic number.

78056678 is a deficient number, since it is larger than the sum of its proper divisors (55991866).

78056678 is a wasteful number, since it uses less digits than its factorization.

78056678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9887.

The product of its (nonzero) digits is 564480, while the sum is 47.

The square root of 78056678 is about 8834.9690435225. The cubic root of 78056678 is about 427.3693327495.

The spelling of 78056678 in words is "seventy-eight million, fifty-six thousand, six hundred seventy-eight".