6689420875 has 16 divisors (see below), whose sum is σ = 8380921536. Its totient is φ = 5330688000.

The previous prime is 6689420867. The next prime is 6689420891. The reversal of 6689420875 is 5780249866.

It is not a de Polignac number, because 6689420875 - 2³ = 6689420867 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71991 + ... + 136240.

It is an arithmetic number, because the mean of its divisors is an integer number (523807596).

Almost surely, 2^6689420875 is an apocalyptic number.

6689420875 is a deficient number, since it is larger than the sum of its proper divisors (1691500661).

6689420875 is a wasteful number, since it uses less digits than its factorization.

6689420875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208503 (or 208493 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 55.

The square root of 6689420875 is about 81788.8798981866. The cubic root of 6689420875 is about 1884.2108792301.

The spelling of 6689420875 in words is "six billion, six hundred eighty-nine million, four hundred twenty thousand, eight hundred seventy-five".