78848663 has 4 divisors (see below), whose sum is σ = 79614288. Its totient is φ = 78083040.

The previous prime is 78848647. The next prime is 78848701. The reversal of 78848663 is 36684887.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36684887 = 653 ⋅56179.

It is a cyclic number.

It is not a de Polignac number, because 78848663 - 2⁴ = 78848647 is a prime.

It is a super-2 number, since 2×78848663² = 12434223313775138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78842663) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 382658 + ... + 382863.

It is an arithmetic number, because the mean of its divisors is an integer number (19903572).

Almost surely, 2^78848663 is an apocalyptic number.

78848663 is a deficient number, since it is larger than the sum of its proper divisors (765625).

78848663 is a wasteful number, since it uses less digits than its factorization.

78848663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765624.

The product of its digits is 1548288, while the sum is 50.

The square root of 78848663 is about 8879.6769648451. The cubic root of 78848663 is about 428.8098747651.

The spelling of 78848663 in words is "seventy-eight million, eight hundred forty-eight thousand, six hundred sixty-three".