6998159026 has 8 divisors (see below), whose sum is σ = 10497649644. Its totient is φ = 3498942480.

The previous prime is 6998158967. The next prime is 6998159057. The reversal of 6998159026 is 6209518996.

It is a happy number.

It is a Cunningham number, because it is equal to 83655²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 6998159025 + 1 = 83655^2 + 1^2 .

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

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, 16336 + ... + 119428.

Almost surely, 2^6998159026 is an apocalyptic number.

6998159026 is a deficient number, since it is larger than the sum of its proper divisors (3499490618).

6998159026 is a wasteful number, since it uses less digits than its factorization.

6998159026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137036.

The product of its (nonzero) digits is 2099520, while the sum is 55.

The square root of 6998159026 is about 83655.0000059769. Note that the first 5 decimals coincide. The cubic root of 6998159026 is about 1912.7634701370.

The spelling of 6998159026 in words is "six billion, nine hundred ninety-eight million, one hundred fifty-nine thousand, twenty-six".