2584661663 has 2 divisors, whose sum is σ = 2584661664. Its totient is φ = 2584661662.

The previous prime is 2584661659. The next prime is 2584661701. The reversal of 2584661663 is 3661664852.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2584661663 - 2² = 2584661659 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2584661633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1292330831 + 1292330832.

It is an arithmetic number, because the mean of its divisors is an integer number (1292330832).

Almost surely, 2^2584661663 is an apocalyptic number.

2584661663 is a deficient number, since it is larger than the sum of its proper divisors (1).

2584661663 is an equidigital number, since it uses as much as digits as its factorization.

2584661663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 47.

The square root of 2584661663 is about 50839.5678876208. The cubic root of 2584661663 is about 1372.3595233370.

The spelling of 2584661663 in words is "two billion, five hundred eighty-four million, six hundred sixty-one thousand, six hundred sixty-three".