2566667 has 2 divisors, whose sum is σ = 2566668. Its totient is φ = 2566666.

The previous prime is 2566661. The next prime is 2566673. The reversal of 2566667 is 7666652.

It is a balanced prime because it is at equal distance from previous prime (2566661) and next prime (2566673).

It is a cyclic number.

It is not a de Polignac number, because 2566667 - 2⁴ = 2566651 is a prime.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 2566667.

It is not a weakly prime, because it can be changed into another prime (2566661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283333 + 1283334.

It is an arithmetic number, because the mean of its divisors is an integer number (1283334).

2^2566667 is an apocalyptic number.

2566667 is a deficient number, since it is larger than the sum of its proper divisors (1).

2566667 is an equidigital number, since it uses as much as digits as its factorization.

2566667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 38.

The square root of 2566667 is about 1602.0820827910. The cubic root of 2566667 is about 136.9167270596.

The spelling of 2566667 in words is "two million, five hundred sixty-six thousand, six hundred sixty-seven".