6649462517 has 2 divisors, whose sum is σ = 6649462518. Its totient is φ = 6649462516.

The previous prime is 6649462499. The next prime is 6649462529. The reversal of 6649462517 is 7152649466.

6649462517 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6147971281 + 501491236 = 78409^2 + 22394^2 .

It is a cyclic number.

It is not a de Polignac number, because 6649462517 - 2⁶ = 6649462453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6649462537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3324731258 + 3324731259.

It is an arithmetic number, because the mean of its divisors is an integer number (3324731259).

Almost surely, 2^6649462517 is an apocalyptic number.

It is an amenable number.

6649462517 is a deficient number, since it is larger than the sum of its proper divisors (1).

6649462517 is an equidigital number, since it uses as much as digits as its factorization.

6649462517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 50.

The square root of 6649462517 is about 81544.2365651920. The cubic root of 6649462517 is about 1880.4516906415.

The spelling of 6649462517 in words is "six billion, six hundred forty-nine million, four hundred sixty-two thousand, five hundred seventeen".