78663344 has 30 divisors (see below), whose sum is σ = 160865820. Its totient is φ = 37258848.

The previous prime is 78663329. The next prime is 78663349. The reversal of 78663344 is 44336687.

It is not an unprimeable number, because it can be changed into a prime (78663349) 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 5 ways as a sum of consecutive naturals, for example, 1034 + ... + 12585.

It is an arithmetic number, because the mean of its divisors is an integer number (5362194).

Almost surely, 2^78663344 is an apocalyptic number.

It is an amenable number.

78663344 is an abundant number, since it is smaller than the sum of its proper divisors (82202476).

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

78663344 is a wasteful number, since it uses less digits than its factorization.

78663344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13665 (or 13640 counting only the distinct ones).

The product of its digits is 290304, while the sum is 41.

The square root of 78663344 is about 8869.2358182653. The cubic root of 78663344 is about 428.4736654889.

The spelling of 78663344 in words is "seventy-eight million, six hundred sixty-three thousand, three hundred forty-four".