78667596 has 72 divisors (see below), whose sum is σ = 229092864. Its totient is φ = 22295520.

The previous prime is 78667579. The next prime is 78667601. The reversal of 78667596 is 69576687.

It is a happy 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 23 ways as a sum of consecutive naturals, for example, 31821 + ... + 34203.

Almost surely, 2^78667596 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 78667596, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114546432).

78667596 is an abundant number, since it is smaller than the sum of its proper divisors (150425268).

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

78667596 is a wasteful number, since it uses less digits than its factorization.

78667596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531 (or 2526 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 78667596 is about 8869.4755200068. The cubic root of 78667596 is about 428.4813854642.

Subtracting from 78667596 its reverse (69576687), we obtain a palindrome (9090909).

The spelling of 78667596 in words is "seventy-eight million, six hundred sixty-seven thousand, five hundred ninety-six".