79845648 has 40 divisors (see below), whose sum is σ = 209102688. Its totient is φ = 26249472.

The previous prime is 79845641. The next prime is 79845653. The reversal of 79845648 is 84654897.

It is a self number, because there is not a number n which added to its sum of digits gives 79845648.

It is not an unprimeable number, because it can be changed into a prime (79845641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7890 + ... + 14897.

Almost surely, 2^79845648 is an apocalyptic number.

It is an amenable number.

79845648 is an abundant number, since it is smaller than the sum of its proper divisors (129257040).

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

79845648 is a wasteful number, since it uses less digits than its factorization.

79845648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22871 (or 22865 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The square root of 79845648 is about 8935.6392048918. The cubic root of 79845648 is about 430.6096418387.

Subtracting 79845648 from its reverse (84654897), we obtain a square (4809249 = 2193²).

The spelling of 79845648 in words is "seventy-nine million, eight hundred forty-five thousand, six hundred forty-eight".