2566066 has 8 divisors (see below), whose sum is σ = 3859740. Its totient is φ = 1279488.

The previous prime is 2566063. The next prime is 2566073. The reversal of 2566066 is 6606652.

It can be written as a sum of positive squares in 2 ways, for example, as 1703025 + 863041 = 1305^2 + 929^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751 + ... + 2386.

2^2566066 is an apocalyptic number.

2566066 is a deficient number, since it is larger than the sum of its proper divisors (1293674).

2566066 is a wasteful number, since it uses less digits than its factorization.

2566066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3548.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 2566066 is about 1601.8945033928. The cubic root of 2566066 is about 136.9060396095.

The spelling of 2566066 in words is "two million, five hundred sixty-six thousand, sixty-six".