6490297277 has 2 divisors, whose sum is σ = 6490297278. Its totient is φ = 6490297276.

The previous prime is 6490297271. The next prime is 6490297357. The reversal of 6490297277 is 7727920946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4653831961 + 1836465316 = 68219^2 + 42854^2 .

It is a cyclic number.

It is not a de Polignac number, because 6490297277 - 2¹² = 6490293181 is a prime.

It is a super-2 number, since 2×6490297277² = 84247917487667229458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6490297271) 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, 3245148638 + 3245148639.

It is an arithmetic number, because the mean of its divisors is an integer number (3245148639).

Almost surely, 2^6490297277 is an apocalyptic number.

It is an amenable number.

6490297277 is a deficient number, since it is larger than the sum of its proper divisors (1).

6490297277 is an equidigital number, since it uses as much as digits as its factorization.

6490297277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2667168, while the sum is 53.

The square root of 6490297277 is about 80562.3812768714. The cubic root of 6490297277 is about 1865.3265128505.

The spelling of 6490297277 in words is "six billion, four hundred ninety million, two hundred ninety-seven thousand, two hundred seventy-seven".