2667582779 has 2 divisors, whose sum is σ = 2667582780. Its totient is φ = 2667582778.

The previous prime is 2667582739. The next prime is 2667582781. The reversal of 2667582779 is 9772857662.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2667582779 - 2²⁰ = 2666534203 is a prime.

Together with 2667582781, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2667582739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333791389 + 1333791390.

It is an arithmetic number, because the mean of its divisors is an integer number (1333791390).

Almost surely, 2^2667582779 is an apocalyptic number.

2667582779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2667582779 is an equidigital number, since it uses as much as digits as its factorization.

2667582779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17781120, while the sum is 59.

The square root of 2667582779 is about 51648.6474072652. The cubic root of 2667582779 is about 1386.8813297237.

The spelling of 2667582779 in words is "two billion, six hundred sixty-seven million, five hundred eighty-two thousand, seven hundred seventy-nine".