6484994657 has 2 divisors, whose sum is σ = 6484994658. Its totient is φ = 6484994656.

The previous prime is 6484994653. The next prime is 6484994731. The reversal of 6484994657 is 7564994846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6473167936 + 11826721 = 80456^2 + 3439^2 .

It is a cyclic number.

It is not a de Polignac number, because 6484994657 - 2² = 6484994653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6484994657.

It is not a weakly prime, because it can be changed into another prime (6484994651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3242497328 + 3242497329.

It is an arithmetic number, because the mean of its divisors is an integer number (3242497329).

Almost surely, 2^6484994657 is an apocalyptic number.

It is an amenable number.

6484994657 is a deficient number, since it is larger than the sum of its proper divisors (1).

6484994657 is an equidigital number, since it uses as much as digits as its factorization.

6484994657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52254720, while the sum is 62.

The square root of 6484994657 is about 80529.4645269668. The cubic root of 6484994657 is about 1864.8183793409.

The spelling of 6484994657 in words is "six billion, four hundred eighty-four million, nine hundred ninety-four thousand, six hundred fifty-seven".