2658779 has 2 divisors, whose sum is σ = 2658780. Its totient is φ = 2658778.

The previous prime is 2658769. The next prime is 2658787. The reversal of 2658779 is 9778562.

2658779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2658779 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (2658769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1329389 + 1329390.

It is an arithmetic number, because the mean of its divisors is an integer number (1329390).

2^2658779 is an apocalyptic number.

2658779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2658779 is an equidigital number, since it uses as much as digits as its factorization.

2658779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 44.

The square root of 2658779 is about 1630.5762784979. The cubic root of 2658779 is about 138.5353947777.

The spelling of 2658779 in words is "two million, six hundred fifty-eight thousand, seven hundred seventy-nine".