6530869817 has 2 divisors, whose sum is σ = 6530869818. Its totient is φ = 6530869816.

The previous prime is 6530869811. The next prime is 6530869837. The reversal of 6530869817 is 7189680356.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5484735481 + 1046134336 = 74059^2 + 32344^2 .

It is a cyclic number.

It is not a de Polignac number, because 6530869817 - 2³² = 2235902521 is a prime.

It is a super-2 number, since 2×6530869817² = 85304521133203226978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6530869811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3265434908 + 3265434909.

It is an arithmetic number, because the mean of its divisors is an integer number (3265434909).

Almost surely, 2^6530869817 is an apocalyptic number.

It is an amenable number.

6530869817 is a deficient number, since it is larger than the sum of its proper divisors (1).

6530869817 is an equidigital number, since it uses as much as digits as its factorization.

6530869817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 6530869817 is about 80813.7971945385. The cubic root of 6530869817 is about 1869.2053223060.

The spelling of 6530869817 in words is "six billion, five hundred thirty million, eight hundred sixty-nine thousand, eight hundred seventeen".