2780068679 has 2 divisors, whose sum is σ = 2780068680. Its totient is φ = 2780068678.

The previous prime is 2780068663. The next prime is 2780068699. The reversal of 2780068679 is 9768600872.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2780068679 - 2⁴ = 2780068663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2780068679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2780068639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390034339 + 1390034340.

It is an arithmetic number, because the mean of its divisors is an integer number (1390034340).

Almost surely, 2^2780068679 is an apocalyptic number.

2780068679 is a deficient number, since it is larger than the sum of its proper divisors (1).

2780068679 is an equidigital number, since it uses as much as digits as its factorization.

2780068679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The square root of 2780068679 is about 52726.3565875739. The cubic root of 2780068679 is about 1406.1074468330.

The spelling of 2780068679 in words is "two billion, seven hundred eighty million, sixty-eight thousand, six hundred seventy-nine".