6679577858 has 4 divisors (see below), whose sum is σ = 10019366790. Its totient is φ = 3339788928.

The previous prime is 6679577857. The next prime is 6679577873. The reversal of 6679577858 is 8587759766.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8587759766 = 2 ⋅4293879883.

It can be written as a sum of positive squares in only one way, i.e., 4238921449 + 2440656409 = 65107^2 + 49403^2 .

It is a super-2 number, since 2×6679577858² = 89233520722167736328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6679577857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1669894463 + ... + 1669894466.

Almost surely, 2^6679577858 is an apocalyptic number.

6679577858 is a deficient number, since it is larger than the sum of its proper divisors (3339788932).

6679577858 is a wasteful number, since it uses less digits than its factorization.

6679577858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3339788931.

The product of its digits is 177811200, while the sum is 68.

The square root of 6679577858 is about 81728.6844259713. The cubic root of 6679577858 is about 1883.2862638787.

The spelling of 6679577858 in words is "six billion, six hundred seventy-nine million, five hundred seventy-seven thousand, eight hundred fifty-eight".