698210647 has 2 divisors, whose sum is σ = 698210648. Its totient is φ = 698210646.

The previous prime is 698210629. The next prime is 698210657. The reversal of 698210647 is 746012896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 698210647 - 2¹⁹ = 697686359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (698210627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349105323 + 349105324.

It is an arithmetic number, because the mean of its divisors is an integer number (349105324).

Almost surely, 2^698210647 is an apocalyptic number.

698210647 is a deficient number, since it is larger than the sum of its proper divisors (1).

698210647 is an equidigital number, since it uses as much as digits as its factorization.

698210647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 698210647 is about 26423.6758797863. The cubic root of 698210647 is about 887.1467972826.

The spelling of 698210647 in words is "six hundred ninety-eight million, two hundred ten thousand, six hundred forty-seven".