2560400671 has 2 divisors, whose sum is σ = 2560400672. Its totient is φ = 2560400670.

The previous prime is 2560400659. The next prime is 2560400707. The reversal of 2560400671 is 1760040652.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2560400671 - 2⁷ = 2560400543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2560400611) 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, 1280200335 + 1280200336.

It is an arithmetic number, because the mean of its divisors is an integer number (1280200336).

Almost surely, 2^2560400671 is an apocalyptic number.

2560400671 is a deficient number, since it is larger than the sum of its proper divisors (1).

2560400671 is an equidigital number, since it uses as much as digits as its factorization.

2560400671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 2560400671 is about 50600.4018857558. The cubic root of 2560400671 is about 1368.0521221363.

The spelling of 2560400671 in words is "two billion, five hundred sixty million, four hundred thousand, six hundred seventy-one".