2666529 has 12 divisors (see below), whose sum is σ = 3896100. Its totient is φ = 1757184.

The previous prime is 2666519. The next prime is 2666537. The reversal of 2666529 is 9256662.

It can be written as a sum of positive squares in 2 ways, for example, as 762129 + 1904400 = 873^2 + 1380^2 .

It is not a de Polignac number, because 2666529 - 2⁴ = 2666513 is a prime.

It is a super-2 number, since 2×2666529² = 14220753815682, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2666493 and 2666502.

It is not an unprimeable number, because it can be changed into a prime (2666519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 864 + ... + 2465.

It is an arithmetic number, because the mean of its divisors is an integer number (324675).

2^2666529 is an apocalyptic number.

It is an amenable number.

2666529 is a deficient number, since it is larger than the sum of its proper divisors (1229571).

2666529 is a wasteful number, since it uses less digits than its factorization.

2666529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424 (or 3421 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 2666529 is about 1632.9510096754. The cubic root of 2666529 is about 138.6698685107.

The spelling of 2666529 in words is "two million, six hundred sixty-six thousand, five hundred twenty-nine".