6559770638 has 8 divisors (see below), whose sum is σ = 9929928360. Its totient is φ = 3249794520.

The previous prime is 6559770611. The next prime is 6559770641. The reversal of 6559770638 is 8360779556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15045128 + ... + 15045563.

It is an arithmetic number, because the mean of its divisors is an integer number (1241241045).

Almost surely, 2^6559770638 is an apocalyptic number.

6559770638 is a deficient number, since it is larger than the sum of its proper divisors (3370157722).

6559770638 is a wasteful number, since it uses less digits than its factorization.

6559770638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30090802.

The product of its (nonzero) digits is 9525600, while the sum is 56.

The square root of 6559770638 is about 80992.4109901662. The cubic root of 6559770638 is about 1871.9585072423.

The spelling of 6559770638 in words is "six billion, five hundred fifty-nine million, seven hundred seventy thousand, six hundred thirty-eight".