2780005567 has 2 divisors, whose sum is σ = 2780005568. Its totient is φ = 2780005566.

The previous prime is 2780005541. The next prime is 2780005603. The reversal of 2780005567 is 7655000872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2780005567 - 2⁷ = 2780005439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2780005537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390002783 + 1390002784.

It is an arithmetic number, because the mean of its divisors is an integer number (1390002784).

Almost surely, 2^2780005567 is an apocalyptic number.

2780005567 is a deficient number, since it is larger than the sum of its proper divisors (1).

2780005567 is an equidigital number, since it uses as much as digits as its factorization.

2780005567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 2780005567 is about 52725.7580979164. The cubic root of 2780005567 is about 1406.0968064574.

The spelling of 2780005567 in words is "two billion, seven hundred eighty million, five thousand, five hundred sixty-seven".