6779590885 has 4 divisors (see below), whose sum is σ = 8135509068. Its totient is φ = 5423672704.

The previous prime is 6779590861. The next prime is 6779590889. The reversal of 6779590885 is 5880959776.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2764340929 + 4015249956 = 52577^2 + 63366^2 .

It is a cyclic number.

It is not a de Polignac number, because 6779590885 - 2⁷ = 6779590757 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 (6779590889) 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, 677959084 + ... + 677959093.

It is an arithmetic number, because the mean of its divisors is an integer number (2033877267).

Almost surely, 2^6779590885 is an apocalyptic number.

It is an amenable number.

6779590885 is a deficient number, since it is larger than the sum of its proper divisors (1355918183).

6779590885 is a wasteful number, since it uses less digits than its factorization.

6779590885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355918182.

The product of its (nonzero) digits is 38102400, while the sum is 64.

The square root of 6779590885 is about 82338.2710833790. The cubic root of 6779590885 is about 1892.6391919945.

The spelling of 6779590885 in words is "six billion, seven hundred seventy-nine million, five hundred ninety thousand, eight hundred eighty-five".