78585827 has 2 divisors, whose sum is σ = 78585828. Its totient is φ = 78585826.

The previous prime is 78585797. The next prime is 78585847. The reversal of 78585827 is 72858587.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78585827 - 2⁶ = 78585763 is a prime.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (78585847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39292913 + 39292914.

It is an arithmetic number, because the mean of its divisors is an integer number (39292914).

Almost surely, 2^78585827 is an apocalyptic number.

78585827 is a deficient number, since it is larger than the sum of its proper divisors (1).

78585827 is an equidigital number, since it uses as much as digits as its factorization.

78585827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1254400, while the sum is 50.

The square root of 78585827 is about 8864.8647479812. The cubic root of 78585827 is about 428.3328760293.

The spelling of 78585827 in words is "seventy-eight million, five hundred eighty-five thousand, eight hundred twenty-seven".