78466243 has 2 divisors, whose sum is σ = 78466244. Its totient is φ = 78466242.

The previous prime is 78466217. The next prime is 78466259. The reversal of 78466243 is 34266487.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78466243 - 2⁵ = 78466211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78466196 and 78466205.

It is not a weakly prime, because it can be changed into another prime (78466043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39233121 + 39233122.

It is an arithmetic number, because the mean of its divisors is an integer number (39233122).

Almost surely, 2^78466243 is an apocalyptic number.

78466243 is a deficient number, since it is larger than the sum of its proper divisors (1).

78466243 is an equidigital number, since it uses as much as digits as its factorization.

78466243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 40.

The square root of 78466243 is about 8858.1173507693. The cubic root of 78466243 is about 428.1155011159.

The spelling of 78466243 in words is "seventy-eight million, four hundred sixty-six thousand, two hundred forty-three".