78917696 has 56 divisors (see below), whose sum is σ = 184001664. Its totient is φ = 33108480.

The previous prime is 78917681. The next prime is 78917711. The reversal of 78917696 is 69671987.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78917681) and next prime (78917711).

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, 4841 + ... + 13463.

It is an arithmetic number, because the mean of its divisors is an integer number (3285744).

Almost surely, 2^78917696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78917696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92000832).

78917696 is an abundant number, since it is smaller than the sum of its proper divisors (105083968).

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

78917696 is a wasteful number, since it uses less digits than its factorization.

78917696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8659 (or 8649 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 53.

The square root of 78917696 is about 8883.5632490572. The cubic root of 78917696 is about 428.9349810813.

The spelling of 78917696 in words is "seventy-eight million, nine hundred seventeen thousand, six hundred ninety-six".