2668779 has 12 divisors (see below), whose sum is σ = 4081896. Its totient is φ = 1674432.

The previous prime is 2668769. The next prime is 2668781. The reversal of 2668779 is 9778662.

It is a happy number.

It is not a de Polignac number, because 2668779 - 2¹³ = 2660587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2668769) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8569 + ... + 8874.

It is an arithmetic number, because the mean of its divisors is an integer number (340158).

2^2668779 is an apocalyptic number.

2668779 is a deficient number, since it is larger than the sum of its proper divisors (1413117).

2668779 is a wasteful number, since it uses less digits than its factorization.

2668779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17466 (or 17463 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 2668779 is about 1633.6398011802. The cubic root of 2668779 is about 138.7088604597.

It can be divided in two parts, 266 and 8779, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 2668779 in words is "two million, six hundred sixty-eight thousand, seven hundred seventy-nine".