6998478359 has 2 divisors, whose sum is σ = 6998478360. Its totient is φ = 6998478358.

The previous prime is 6998478337. The next prime is 6998478397. The reversal of 6998478359 is 9538748996.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6998478359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6998472359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3499239179 + 3499239180.

It is an arithmetic number, because the mean of its divisors is an integer number (3499239180).

Almost surely, 2^6998478359 is an apocalyptic number.

6998478359 is a deficient number, since it is larger than the sum of its proper divisors (1).

6998478359 is an equidigital number, since it uses as much as digits as its factorization.

6998478359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117573120, while the sum is 68.

The square root of 6998478359 is about 83656.9086148897. The cubic root of 6998478359 is about 1912.7925634649.

The spelling of 6998478359 in words is "six billion, nine hundred ninety-eight million, four hundred seventy-eight thousand, three hundred fifty-nine".