6687639214 has 8 divisors (see below), whose sum is σ = 10621544688. Its totient is φ = 3147124320.

The previous prime is 6687639139. The next prime is 6687639239. The reversal of 6687639214 is 4129367866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98347602 + ... + 98347669.

It is an arithmetic number, because the mean of its divisors is an integer number (1327693086).

Almost surely, 2^6687639214 is an apocalyptic number.

6687639214 is a deficient number, since it is larger than the sum of its proper divisors (3933905474).

6687639214 is a wasteful number, since it uses less digits than its factorization.

6687639214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196695290.

The product of its digits is 2612736, while the sum is 52.

The square root of 6687639214 is about 81777.9873437834. The cubic root of 6687639214 is about 1884.0435840744.

The spelling of 6687639214 in words is "six billion, six hundred eighty-seven million, six hundred thirty-nine thousand, two hundred fourteen".