6524200661 has 4 divisors (see below), whose sum is σ = 7117309824. Its totient is φ = 5931091500.

The previous prime is 6524200651. The next prime is 6524200663. The reversal of 6524200661 is 1660024256.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6524200661 - 2¹⁰ = 6524199637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6524200663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296554565 + ... + 296554586.

It is an arithmetic number, because the mean of its divisors is an integer number (1779327456).

Almost surely, 2^6524200661 is an apocalyptic number.

It is an amenable number.

6524200661 is a deficient number, since it is larger than the sum of its proper divisors (593109163).

6524200661 is a wasteful number, since it uses less digits than its factorization.

6524200661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593109162.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 6524200661 is about 80772.5241712799. The cubic root of 6524200661 is about 1868.5688441658.

The spelling of 6524200661 in words is "six billion, five hundred twenty-four million, two hundred thousand, six hundred sixty-one".