78916678 has 16 divisors (see below), whose sum is σ = 120403584. Its totient is φ = 38787840.

The previous prime is 78916667. The next prime is 78916679. The reversal of 78916678 is 87661987.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78916679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29163 + ... + 31753.

It is an arithmetic number, because the mean of its divisors is an integer number (7525224).

Almost surely, 2^78916678 is an apocalyptic number.

78916678 is a deficient number, since it is larger than the sum of its proper divisors (41486906).

78916678 is a wasteful number, since it uses less digits than its factorization.

78916678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847.

The product of its digits is 1016064, while the sum is 52.

The square root of 78916678 is about 8883.5059520439. The cubic root of 78916678 is about 428.9331367223.

The spelling of 78916678 in words is "seventy-eight million, nine hundred sixteen thousand, six hundred seventy-eight".