6959984987 has 2 divisors, whose sum is σ = 6959984988. Its totient is φ = 6959984986.

The previous prime is 6959984959. The next prime is 6959985037. The reversal of 6959984987 is 7894899596.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6959984987 - 2²⁸ = 6691549531 is a prime.

It is not a weakly prime, because it can be changed into another prime (6959984387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3479992493 + 3479992494.

It is an arithmetic number, because the mean of its divisors is an integer number (3479992494).

Almost surely, 2^6959984987 is an apocalyptic number.

6959984987 is a deficient number, since it is larger than the sum of its proper divisors (1).

6959984987 is an equidigital number, since it uses as much as digits as its factorization.

6959984987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352719360, while the sum is 74.

The square root of 6959984987 is about 83426.5244811265. The cubic root of 6959984987 is about 1909.2791690727.

The spelling of 6959984987 in words is "six billion, nine hundred fifty-nine million, nine hundred eighty-four thousand, nine hundred eighty-seven".