6577789679 has 4 divisors (see below), whose sum is σ = 6730761576. Its totient is φ = 6424817784.

The previous prime is 6577789577. The next prime is 6577789693. The reversal of 6577789679 is 9769877756.

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

It is a cyclic number.

It is not a de Polignac number, because 6577789679 - 2²⁴ = 6561012463 is a prime.

It is a super-2 number, since 2×6577789679² = 86534634122317846082, 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 (6577785679) 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, 76485884 + ... + 76485969.

It is an arithmetic number, because the mean of its divisors is an integer number (1682690394).

Almost surely, 2^6577789679 is an apocalyptic number.

6577789679 is a deficient number, since it is larger than the sum of its proper divisors (152971897).

6577789679 is a wasteful number, since it uses less digits than its factorization.

6577789679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152971896.

The product of its digits is 280052640, while the sum is 71.

The square root of 6577789679 is about 81103.5737745261. The cubic root of 6577789679 is about 1873.6709684879.

The spelling of 6577789679 in words is "six billion, five hundred seventy-seven million, seven hundred eighty-nine thousand, six hundred seventy-nine".