6698333491 has 2 divisors, whose sum is σ = 6698333492. Its totient is φ = 6698333490.

The previous prime is 6698333423. The next prime is 6698333507. The reversal of 6698333491 is 1943338966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6698333491 - 2⁷ = 6698333363 is a prime.

It is a super-3 number, since 3×6698333491³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (6698333791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3349166745 + 3349166746.

It is an arithmetic number, because the mean of its divisors is an integer number (3349166746).

Almost surely, 2^6698333491 is an apocalyptic number.

6698333491 is a deficient number, since it is larger than the sum of its proper divisors (1).

6698333491 is an equidigital number, since it uses as much as digits as its factorization.

6698333491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2519424, while the sum is 52.

The square root of 6698333491 is about 81843.3472617048. The cubic root of 6698333491 is about 1885.0473141386.

The spelling of 6698333491 in words is "six billion, six hundred ninety-eight million, three hundred thirty-three thousand, four hundred ninety-one".