78966911 has 2 divisors, whose sum is σ = 78966912. Its totient is φ = 78966910.

The previous prime is 78966893. The next prime is 78966929. The reversal of 78966911 is 11966987.

It is a balanced prime because it is at equal distance from previous prime (78966893) and next prime (78966929).

It is a cyclic number.

It is not a de Polignac number, because 78966911 - 2¹⁸ = 78704767 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78966011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39483455 + 39483456.

It is an arithmetic number, because the mean of its divisors is an integer number (39483456).

Almost surely, 2^78966911 is an apocalyptic number.

78966911 is a deficient number, since it is larger than the sum of its proper divisors (1).

78966911 is an equidigital number, since it uses as much as digits as its factorization.

78966911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 47.

The square root of 78966911 is about 8886.3328206859. The cubic root of 78966911 is about 429.0241273245.

The spelling of 78966911 in words is "seventy-eight million, nine hundred sixty-six thousand, nine hundred eleven".