6986879507 has 2 divisors, whose sum is σ = 6986879508. Its totient is φ = 6986879506.

The previous prime is 6986879489. The next prime is 6986879509. The reversal of 6986879507 is 7059786896.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6986879507 is a prime.

Together with 6986879509, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6986879509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3493439753 + 3493439754.

It is an arithmetic number, because the mean of its divisors is an integer number (3493439754).

Almost surely, 2^6986879507 is an apocalyptic number.

6986879507 is a deficient number, since it is larger than the sum of its proper divisors (1).

6986879507 is an equidigital number, since it uses as much as digits as its factorization.

6986879507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45722880, while the sum is 65.

The square root of 6986879507 is about 83587.5559338829. Note that the first 3 decimals coincide. The cubic root of 6986879507 is about 1911.7352638304.

The spelling of 6986879507 in words is "six billion, nine hundred eighty-six million, eight hundred seventy-nine thousand, five hundred seven".