698128367 has 2 divisors, whose sum is σ = 698128368. Its totient is φ = 698128366.

The previous prime is 698128331. The next prime is 698128373. The reversal of 698128367 is 763821896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 698128367 - 2¹⁰ = 698127343 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (698128967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349064183 + 349064184.

It is an arithmetic number, because the mean of its divisors is an integer number (349064184).

Almost surely, 2^698128367 is an apocalyptic number.

698128367 is a deficient number, since it is larger than the sum of its proper divisors (1).

698128367 is an equidigital number, since it uses as much as digits as its factorization.

698128367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 50.

The square root of 698128367 is about 26422.1188968637. The cubic root of 698128367 is about 887.1119475773. Note that the first 3 decimals are identical.

The spelling of 698128367 in words is "six hundred ninety-eight million, one hundred twenty-eight thousand, three hundred sixty-seven".