6628676878 has 4 divisors (see below), whose sum is σ = 9943015320. Its totient is φ = 3314338438.

The previous prime is 6628676863. The next prime is 6628676893. The reversal of 6628676878 is 8786768266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8786768266 = 2 ⋅4393384133.

It is an interprime number because it is at equal distance from previous prime (6628676863) and next prime (6628676893).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1657169218 + ... + 1657169221.

It is an arithmetic number, because the mean of its divisors is an integer number (2485753830).

Almost surely, 2^6628676878 is an apocalyptic number.

6628676878 is a deficient number, since it is larger than the sum of its proper divisors (3314338442).

6628676878 is a wasteful number, since it uses less digits than its factorization.

6628676878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314338441.

The product of its digits is 65028096, while the sum is 64.

The square root of 6628676878 is about 81416.6867294414. The cubic root of 6628676878 is about 1878.4902695666.

The spelling of 6628676878 in words is "six billion, six hundred twenty-eight million, six hundred seventy-six thousand, eight hundred seventy-eight".