698066647 has 2 divisors, whose sum is σ = 698066648. Its totient is φ = 698066646.

The previous prime is 698066641. The next prime is 698066713. The reversal of 698066647 is 746660896.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 698066647 - 2¹¹ = 698064599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 698066594 and 698066603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (698066641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349033323 + 349033324.

It is an arithmetic number, because the mean of its divisors is an integer number (349033324).

Almost surely, 2^698066647 is an apocalyptic number.

698066647 is a deficient number, since it is larger than the sum of its proper divisors (1).

698066647 is an equidigital number, since it uses as much as digits as its factorization.

698066647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The square root of 698066647 is about 26420.9509102152. The cubic root of 698066647 is about 887.0858042653.

The spelling of 698066647 in words is "six hundred ninety-eight million, sixty-six thousand, six hundred forty-seven".