2666530 has 16 divisors (see below), whose sum is σ = 4851000. Its totient is φ = 1055232.

The previous prime is 2666519. The next prime is 2666537. The reversal of 2666530 is 356662.

It can be written as a sum of positive squares in 4 ways, for example, as 1545049 + 1121481 = 1243^2 + 1059^2 .

It is a super-2 number, since 2×2666530² = 14220764481800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2666537) 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 7 ways as a sum of consecutive naturals, for example, 405 + ... + 2344.

2^2666530 is an apocalyptic number.

2666530 is a deficient number, since it is larger than the sum of its proper divisors (2184470).

2666530 is a wasteful number, since it uses less digits than its factorization.

2666530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 2666530 is about 1632.9513158695. The cubic root of 2666530 is about 138.6698858453.

The spelling of 2666530 in words is "two million, six hundred sixty-six thousand, five hundred thirty".