78672943 has 2 divisors, whose sum is σ = 78672944. Its totient is φ = 78672942.

The previous prime is 78672883. The next prime is 78672953. The reversal of 78672943 is 34927687.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78672943 - 2⁹ = 78672431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78672893 and 78672902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78672953) 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, 39336471 + 39336472.

It is an arithmetic number, because the mean of its divisors is an integer number (39336472).

Almost surely, 2^78672943 is an apocalyptic number.

78672943 is a deficient number, since it is larger than the sum of its proper divisors (1).

78672943 is an equidigital number, since it uses as much as digits as its factorization.

78672943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 46.

The square root of 78672943 is about 8869.7769419529. The cubic root of 78672943 is about 428.4910931379.

The spelling of 78672943 in words is "seventy-eight million, six hundred seventy-two thousand, nine hundred forty-three".