2566829 has 2 divisors, whose sum is σ = 2566830. Its totient is φ = 2566828.

The previous prime is 2566807. The next prime is 2566859. The reversal of 2566829 is 9286652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2553604 + 13225 = 1598^2 + 115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2566829 is a prime.

It is a super-2 number, since 2×2566829² = 13177222230482, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2566792 and 2566801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2566859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283414 + 1283415.

It is an arithmetic number, because the mean of its divisors is an integer number (1283415).

2^2566829 is an apocalyptic number.

It is an amenable number.

2566829 is a deficient number, since it is larger than the sum of its proper divisors (1).

2566829 is an equidigital number, since it uses as much as digits as its factorization.

2566829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 38.

The square root of 2566829 is about 1602.1326412005. The cubic root of 2566829 is about 136.9196075843.

The spelling of 2566829 in words is "two million, five hundred sixty-six thousand, eight hundred twenty-nine".