2660654863 has 2 divisors, whose sum is σ = 2660654864. Its totient is φ = 2660654862.

The previous prime is 2660654849. The next prime is 2660654869. The reversal of 2660654863 is 3684560662.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2660654863 - 2²⁵ = 2627100431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2660654869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330327431 + 1330327432.

It is an arithmetic number, because the mean of its divisors is an integer number (1330327432).

Almost surely, 2^2660654863 is an apocalyptic number.

2660654863 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660654863 is an equidigital number, since it uses as much as digits as its factorization.

2660654863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 46.

The square root of 2660654863 is about 51581.5360666974. The cubic root of 2660654863 is about 1385.6796766526.

The spelling of 2660654863 in words is "two billion, six hundred sixty million, six hundred fifty-four thousand, eight hundred sixty-three".