78848647 has 2 divisors, whose sum is σ = 78848648. Its totient is φ = 78848646.

The previous prime is 78848641. The next prime is 78848701. The reversal of 78848647 is 74684887.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78848647 - 2⁷ = 78848519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78848594 and 78848603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78848641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39424323 + 39424324.

It is an arithmetic number, because the mean of its divisors is an integer number (39424324).

Almost surely, 2^78848647 is an apocalyptic number.

78848647 is a deficient number, since it is larger than the sum of its proper divisors (1).

78848647 is an equidigital number, since it uses as much as digits as its factorization.

78848647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2408448, while the sum is 52.

The square root of 78848647 is about 8879.6760639113. The cubic root of 78848647 is about 428.8098457603.

The spelling of 78848647 in words is "seventy-eight million, eight hundred forty-eight thousand, six hundred forty-seven".