78663960 has 96 divisors (see below), whose sum is σ = 265159440. Its totient is φ = 20974464.

The previous prime is 78663943. The next prime is 78663973. The reversal of 78663960 is 6936687.

78663960 is a `hidden beast` number, since 7 + 8 + 6 + 639 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5674 + ... + 13766.

Almost surely, 2^78663960 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 78663960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132579720).

78663960 is an abundant number, since it is smaller than the sum of its proper divisors (186495480).

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

78663960 is a wasteful number, since it uses less digits than its factorization.

78663960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8119 (or 8103 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 78663960 is about 8869.2705449772. The cubic root of 78663960 is about 428.4747839222.

It can be divided in two parts, 786 and 63960, that added together give a palindrome (64746).

The spelling of 78663960 in words is "seventy-eight million, six hundred sixty-three thousand, nine hundred sixty".