6679618559 has 4 divisors (see below), whose sum is σ = 6748480704. Its totient is φ = 6610756416.

The previous prime is 6679618541. The next prime is 6679618573. The reversal of 6679618559 is 9558169766.

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

It is not a de Polignac number, because 6679618559 - 2⁸ = 6679618303 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 (6679618579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34430927 + ... + 34431120.

It is an arithmetic number, because the mean of its divisors is an integer number (1687120176).

Almost surely, 2^6679618559 is an apocalyptic number.

6679618559 is a deficient number, since it is larger than the sum of its proper divisors (68862145).

6679618559 is an equidigital number, since it uses as much as digits as its factorization.

6679618559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68862144.

The product of its digits is 24494400, while the sum is 62.

The square root of 6679618559 is about 81728.9334262965. The cubic root of 6679618559 is about 1883.2900890446.

The spelling of 6679618559 in words is "six billion, six hundred seventy-nine million, six hundred eighteen thousand, five hundred fifty-nine".