2564410669 has 2 divisors, whose sum is σ = 2564410670. Its totient is φ = 2564410668.

The previous prime is 2564410621. The next prime is 2564410687. The reversal of 2564410669 is 9660144652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2062068100 + 502342569 = 45410^2 + 22413^2 .

It is a cyclic number.

It is not a de Polignac number, because 2564410669 - 2²¹ = 2562313517 is a prime.

It is a super-2 number, since 2×2564410669² = 13152404158562055122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2564410609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282205334 + 1282205335.

It is an arithmetic number, because the mean of its divisors is an integer number (1282205335).

Almost surely, 2^2564410669 is an apocalyptic number.

It is an amenable number.

2564410669 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564410669 is an equidigital number, since it uses as much as digits as its factorization.

2564410669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 2564410669 is about 50640.0105548962. The cubic root of 2564410669 is about 1368.7659459399.

The spelling of 2564410669 in words is "two billion, five hundred sixty-four million, four hundred ten thousand, six hundred sixty-nine".