6578669882 has 4 divisors (see below), whose sum is σ = 9868004826. Its totient is φ = 3289334940.

The previous prime is 6578669863. The next prime is 6578669963. The reversal of 6578669882 is 2889668756.

It is a Cunningham number, because it is equal to 81109²+1.

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

It can be written as a sum of positive squares in only one way, i.e., 6578669881 + 1 = 81109^2 + 1^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1644667469 + ... + 1644667472.

Almost surely, 2^6578669882 is an apocalyptic number.

6578669882 is a deficient number, since it is larger than the sum of its proper divisors (3289334944).

6578669882 is a wasteful number, since it uses less digits than its factorization.

6578669882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3289334943.

The product of its digits is 69672960, while the sum is 65.

The square root of 6578669882 is about 81109.0000061645. Note that the first 5 decimals coincide. The cubic root of 6578669882 is about 1873.7545394811.

The spelling of 6578669882 in words is "six billion, five hundred seventy-eight million, six hundred sixty-nine thousand, eight hundred eighty-two".