78860227 has 2 divisors, whose sum is σ = 78860228. Its totient is φ = 78860226.

The previous prime is 78860207. The next prime is 78860267. The reversal of 78860227 is 72206887.

It is an a-pointer prime, because the next prime (78860267) can be obtained adding 78860227 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78860227 - 2⁷ = 78860099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78860227.

It is not a weakly prime, because it can be changed into another prime (78860207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39430113 + 39430114.

It is an arithmetic number, because the mean of its divisors is an integer number (39430114).

Almost surely, 2^78860227 is an apocalyptic number.

78860227 is a deficient number, since it is larger than the sum of its proper divisors (1).

78860227 is an equidigital number, since it uses as much as digits as its factorization.

78860227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 78860227 is about 8880.3280907858. The cubic root of 78860227 is about 428.8308369256.

The spelling of 78860227 in words is "seventy-eight million, eight hundred sixty thousand, two hundred twenty-seven".