6528668623 has 4 divisors (see below), whose sum is σ = 6529244040. Its totient is φ = 6528093208.

The previous prime is 6528668599. The next prime is 6528668647. The reversal of 6528668623 is 3268668256.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (6528668599) and next prime (6528668647).

It is a cyclic number.

It is not a de Polignac number, because 6528668623 - 2¹⁷ = 6528537551 is a prime.

It is a super-2 number, since 2×6528668623² = 85247027977889432258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6528608623) 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 in 3 ways as a sum of consecutive naturals, for example, 270340 + ... + 293497.

It is an arithmetic number, because the mean of its divisors is an integer number (1632311010).

Almost surely, 2^6528668623 is an apocalyptic number.

6528668623 is a deficient number, since it is larger than the sum of its proper divisors (575417).

6528668623 is a wasteful number, since it uses less digits than its factorization.

6528668623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575416.

The product of its digits is 4976640, while the sum is 52.

The square root of 6528668623 is about 80800.1771223306. The cubic root of 6528668623 is about 1868.9952968936.

The spelling of 6528668623 in words is "six billion, five hundred twenty-eight million, six hundred sixty-eight thousand, six hundred twenty-three".