6617890559 has 24 divisors (see below), whose sum is σ = 7920542160. Its totient is φ = 5509316736.

The previous prime is 6617890553. The next prime is 6617890621. The reversal of 6617890559 is 9550987166.

It is a de Polignac number, because none of the positive numbers 2^k-6617890559 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 (6617890553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1119299 + ... + 1125195.

It is an arithmetic number, because the mean of its divisors is an integer number (330022590).

Almost surely, 2^6617890559 is an apocalyptic number.

6617890559 is a deficient number, since it is larger than the sum of its proper divisors (1302651601).

6617890559 is a wasteful number, since it uses less digits than its factorization.

6617890559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6567 (or 6560 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 56.

The square root of 6617890559 is about 81350.4183086971. The cubic root of 6617890559 is about 1877.4708104372.

The spelling of 6617890559 in words is "six billion, six hundred seventeen million, eight hundred ninety thousand, five hundred fifty-nine".