6480650861 has 2 divisors, whose sum is σ = 6480650862. Its totient is φ = 6480650860.

The previous prime is 6480650857. The next prime is 6480650863. The reversal of 6480650861 is 1680560846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3425877961 + 3054772900 = 58531^2 + 55270^2 .

It is a cyclic number.

It is not a de Polignac number, because 6480650861 - 2² = 6480650857 is a prime.

Together with 6480650863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6480650863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3240325430 + 3240325431.

It is an arithmetic number, because the mean of its divisors is an integer number (3240325431).

Almost surely, 2^6480650861 is an apocalyptic number.

It is an amenable number.

6480650861 is a deficient number, since it is larger than the sum of its proper divisors (1).

6480650861 is an equidigital number, since it uses as much as digits as its factorization.

6480650861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 6480650861 is about 80502.4897813726. The cubic root of 6480650861 is about 1864.4019205090.

The spelling of 6480650861 in words is "six billion, four hundred eighty million, six hundred fifty thousand, eight hundred sixty-one".