83078647 has 2 divisors, whose sum is σ = 83078648. Its totient is φ = 83078646.

The previous prime is 83078627. The next prime is 83078687. The reversal of 83078647 is 74687038.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83078647 - 2¹⁹ = 82554359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83078627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41539323 + 41539324.

It is an arithmetic number, because the mean of its divisors is an integer number (41539324).

Almost surely, 2^83078647 is an apocalyptic number.

83078647 is a deficient number, since it is larger than the sum of its proper divisors (1).

83078647 is an equidigital number, since it uses as much as digits as its factorization.

83078647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 83078647 is about 9114.7488720206. The cubic root of 83078647 is about 436.3448002667.

The spelling of 83078647 in words is "eighty-three million, seventy-eight thousand, six hundred forty-seven".