689098741 has 2 divisors, whose sum is σ = 689098742. Its totient is φ = 689098740.

The previous prime is 689098733. The next prime is 689098793. The reversal of 689098741 is 147890986.

It is a happy number.

It is an a-pointer prime, because the next prime (689098793) can be obtained adding 689098741 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378458116 + 310640625 = 19454^2 + 17625^2 .

It is a cyclic number.

It is not a de Polignac number, because 689098741 - 2³ = 689098733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (689098141) 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, 344549370 + 344549371.

It is an arithmetic number, because the mean of its divisors is an integer number (344549371).

Almost surely, 2^689098741 is an apocalyptic number.

It is an amenable number.

689098741 is a deficient number, since it is larger than the sum of its proper divisors (1).

689098741 is an equidigital number, since it uses as much as digits as its factorization.

689098741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 689098741 is about 26250.6902956856. The cubic root of 689098741 is about 883.2706890744.

The spelling of 689098741 in words is "six hundred eighty-nine million, ninety-eight thousand, seven hundred forty-one".