6687910001 has 4 divisors (see below), whose sum is σ = 6691430004. Its totient is φ = 6684390000.

The previous prime is 6687909967. The next prime is 6687910003. The reversal of 6687910001 is 1000197866.

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 1062760000 + 5625150001 = 32600^2 + 75001^2 .

It is a cyclic number.

It is not a de Polignac number, because 6687910001 - 2¹⁰ = 6687908977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6687910003) 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, 1757150 + ... + 1760951.

It is an arithmetic number, because the mean of its divisors is an integer number (1672857501).

Almost surely, 2^6687910001 is an apocalyptic number.

It is an amenable number.

6687910001 is a deficient number, since it is larger than the sum of its proper divisors (3520003).

6687910001 is a wasteful number, since it uses less digits than its factorization.

6687910001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520002.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 6687910001 is about 81779.6429498197. The cubic root of 6687910001 is about 1884.0690124609.

The spelling of 6687910001 in words is "six billion, six hundred eighty-seven million, nine hundred ten thousand, one".