8078647 has 2 divisors, whose sum is σ = 8078648. Its totient is φ = 8078646.

The previous prime is 8078627. The next prime is 8078663. The reversal of 8078647 is 7468708.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8078647 - 2¹¹ = 8076599 is a prime.

8078647 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8078627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4039323 + 4039324.

It is an arithmetic number, because the mean of its divisors is an integer number (4039324).

Almost surely, 2^8078647 is an apocalyptic number.

8078647 is a deficient number, since it is larger than the sum of its proper divisors (1).

8078647 is an equidigital number, since it uses as much as digits as its factorization.

8078647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 8078647 is about 2842.2960788771. The cubic root of 8078647 is about 200.6532556290.

The spelling of 8078647 in words is "eight million, seventy-eight thousand, six hundred forty-seven".