2278678067 has 2 divisors, whose sum is σ = 2278678068. Its totient is φ = 2278678066.

The previous prime is 2278678049. The next prime is 2278678081. The reversal of 2278678067 is 7608768722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2278678067 - 2¹⁰ = 2278677043 is a prime.

It is not a weakly prime, because it can be changed into another prime (2278678007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1139339033 + 1139339034.

It is an arithmetic number, because the mean of its divisors is an integer number (1139339034).

Almost surely, 2^2278678067 is an apocalyptic number.

2278678067 is a deficient number, since it is larger than the sum of its proper divisors (1).

2278678067 is an equidigital number, since it uses as much as digits as its factorization.

2278678067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3161088, while the sum is 53.

The square root of 2278678067 is about 47735.5011181406. The cubic root of 2278678067 is about 1315.9144544175.

The spelling of 2278678067 in words is "two billion, two hundred seventy-eight million, six hundred seventy-eight thousand, sixty-seven".