78663416 has 48 divisors (see below), whose sum is σ = 161867160. Its totient is φ = 35817600.

The previous prime is 78663397. The next prime is 78663449. The reversal of 78663416 is 61436687.

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 11 ways as a sum of consecutive naturals, for example, 111866 + ... + 112566.

Almost surely, 2^78663416 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 78663416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80933580).

78663416 is an abundant number, since it is smaller than the sum of its proper divisors (83203744).

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

78663416 is a wasteful number, since it uses less digits than its factorization.

78663416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816 (or 799 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 78663416 is about 8869.2398772386. The cubic root of 78663416 is about 428.4737962152.

The spelling of 78663416 in words is "seventy-eight million, six hundred sixty-three thousand, four hundred sixteen".