689462381529 has 12 divisors (see below), whose sum is σ = 996695207716. Its totient is φ = 459270002592.

The previous prime is 689462381519. The next prime is 689462381563. The reversal of 689462381529 is 925183264986.

689462381529 is a `hidden beast` number, since 6 + 8 + 9 + 4 + 6 + 23 + 81 + 529 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 348009145929 + 341453235600 = 589923^2 + 584340^2 .

It is not a de Polignac number, because 689462381529 - 2¹³ = 689462373337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689462381519) 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 in 11 ways as a sum of consecutive naturals, for example, 30953674 + ... + 30975939.

Almost surely, 2^689462381529 is an apocalyptic number.

It is an amenable number.

689462381529 is a deficient number, since it is larger than the sum of its proper divisors (307232826187).

689462381529 is a wasteful number, since it uses less digits than its factorization.

689462381529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61930856 (or 61930853 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The spelling of 689462381529 in words is "six hundred eighty-nine billion, four hundred sixty-two million, three hundred eighty-one thousand, five hundred twenty-nine".