689098733 has 2 divisors, whose sum is σ = 689098734. Its totient is φ = 689098732.

The previous prime is 689098703. The next prime is 689098741. The reversal of 689098733 is 337890986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 667550569 + 21548164 = 25837^2 + 4642^2 .

It is a cyclic number.

It is not a de Polignac number, because 689098733 - 2¹⁴ = 689082349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (689098703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344549366 + 344549367.

It is an arithmetic number, because the mean of its divisors is an integer number (344549367).

Almost surely, 2^689098733 is an apocalyptic number.

It is an amenable number.

689098733 is a deficient number, since it is larger than the sum of its proper divisors (1).

689098733 is an equidigital number, since it uses as much as digits as its factorization.

689098733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 689098733 is about 26250.6901433086. The cubic root of 689098733 is about 883.2706856563.

The spelling of 689098733 in words is "six hundred eighty-nine million, ninety-eight thousand, seven hundred thirty-three".