2566633 has 2 divisors, whose sum is σ = 2566634. Its totient is φ = 2566632.

The previous prime is 2566601. The next prime is 2566637. The reversal of 2566633 is 3366652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2108304 + 458329 = 1452^2 + 677^2 .

It is a cyclic number.

It is not a de Polignac number, because 2566633 - 2⁵ = 2566601 is a prime.

2566633 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2566595 and 2566604.

It is not a weakly prime, because it can be changed into another prime (2566637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283316 + 1283317.

It is an arithmetic number, because the mean of its divisors is an integer number (1283317).

2^2566633 is an apocalyptic number.

It is an amenable number.

2566633 is a deficient number, since it is larger than the sum of its proper divisors (1).

2566633 is an equidigital number, since it uses as much as digits as its factorization.

2566633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 31.

The square root of 2566633 is about 1602.0714715642. The cubic root of 2566633 is about 136.9161224897.

It can be divided in two parts, 256 and 6633, that added together give a square (6889 = 83²).

The spelling of 2566633 in words is "two million, five hundred sixty-six thousand, six hundred thirty-three".